{"id":57208,"date":"2021-07-29T17:12:00","date_gmt":"2021-07-29T11:42:00","guid":{"rendered":"https:\/\/www.kopykitab.com\/blog\/?p=57208"},"modified":"2021-08-29T20:31:03","modified_gmt":"2021-08-29T15:01:03","slug":"ncert-solutions-for-class-11-chemistry-chapter-10","status":"publish","type":"post","link":"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/","title":{"rendered":"Class 11 Chemistry NCERT Solutions for 2021 Chapter 10 The s-Block Elements"},"content":{"rendered":"\n<p><img class=\"alignnone size-full wp-image-109972\" src=\"https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2020\/10\/NCERT-Solutions-For-Class-11-Chemistry-Chapter-10-The-s-Block-Elements.jpg\" alt=\"NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements\" width=\"1200\" height=\"675\" srcset=\"https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2020\/10\/NCERT-Solutions-For-Class-11-Chemistry-Chapter-10-The-s-Block-Elements.jpg 1200w, https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2020\/10\/NCERT-Solutions-For-Class-11-Chemistry-Chapter-10-The-s-Block-Elements-768x432.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p><strong>NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements:<\/strong> In this NCERT Solutions for Class 11 Chemistry Chapter 10 , we will study the s-block elements of the periodic table. The s-block elements of the periodic table are those elements in which the last electron enters the outermost s-subshell (or s-orbital). Two electrons are the maximum capacity of ns energy subshell.\u00a0<\/p>\n<ul>\n<li><a href=\"https:\/\/www.kopykitab.com\/blog\/cbse-class-11-chemistry-ncert-solutions\/\" target=\"_blank\" rel=\"noopener noreferrer\">NCERT Solutions For 11th Chemistry All Chapters<\/a><\/li>\n<\/ul>\n<p>In this chapter, there are 32 questions in the exercise. The NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements are designed and solved by our chemistry experts. These are the detailed explanation of NCERT textbook questions.<\/p>\n<p>These NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements help students in their preparation of class 11 final examination as well as in the various competitive exams like JEE, NEET, BITSAT etc.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_47_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"ez-toc-toggle-icon-1\"><label for=\"item-69e7f027eeb9a\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #000000;color:#000000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #000000;color:#000000\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input  type=\"checkbox\" id=\"item-69e7f027eeb9a\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-visibility-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#ncert-solutions-for-class-11-chemistry-chapter-10-the-s-block-elements\" title=\"NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements\">NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#summary-about-class-11-chemistry-chapter-10-the-s-block-elements\" title=\"Summary About Class 11 Chemistry Chapter 10 The s-Block Elements\">Summary About Class 11 Chemistry Chapter 10 The s-Block Elements<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#access-ncert-solutions-for-class-11-chemistry-chapter-10\" title=\"Access NCERT Solutions For Class 11 Chemistry Chapter 10\">Access NCERT Solutions For Class 11 Chemistry Chapter 10<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-1-what-are-the-common-physical-and-chemical-features-of-alkali-metals\" title=\"Question 1. What are the common physical and chemical features of alkali metals?\">Question 1. What are the common physical and chemical features of alkali metals?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-2-discuss-the-general-characteristics-and-gradation-in-properties-of-alkaline-earth-metals\" title=\"Question 2. Discuss the general characteristics and gradation in properties of alkaline earth metals.\">Question 2. Discuss the general characteristics and gradation in properties of alkaline earth metals.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-3-why-are-alkali-metals-not-found-in-nature\" title=\"Question 3. Why are alkali metals not found in nature?\">Question 3. Why are alkali metals not found in nature?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-4-find-out-the-oxidation-state-of-sodium-in-na2o2\" title=\"Question 4. Find out the oxidation state of sodium in Na2O2.\">Question 4. Find out the oxidation state of sodium in Na2O2.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-5-explain-why-is-sodium-less-reactive-than-potassium\" title=\"Question 5. Explain why is sodium less reactive than potassium.\">Question 5. Explain why is sodium less reactive than potassium.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-6-compare-the-alkali-metals-and-alkaline-earth-metals-with-respect-to-i-ionization-enthalpy-ii-basicity-of-oxides-iii-solubility-of-hydroxides\" title=\"Question 6. Compare the alkali metals and alkaline earth metals with respect to (i) ionization enthalpy, (ii) basicity of oxides, (iii) solubility of hydroxides.\">Question 6. Compare the alkali metals and alkaline earth metals with respect to (i) ionization enthalpy, (ii) basicity of oxides, (iii) solubility of hydroxides.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-7-in-what-ways-lithium-shows-similarities-to-magnesium-in-its-chemical-behaviour\" title=\"Question 7. In what ways lithium shows similarities to magnesium in its chemical behaviour?\">Question 7. In what ways lithium shows similarities to magnesium in its chemical behaviour?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-8-explain-why-can-alkali-and-alkaline-earth-metals-not-be-obtained-by-chemical-reduction-method\" title=\"Question 8. Explain why can alkali and alkaline earth metals not be obtained by chemical reduction method.\">Question 8. Explain why can alkali and alkaline earth metals not be obtained by chemical reduction method.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-9-why-are-potassium-and-cesium-rather-than-lithium-used-in-photoelectric-cells\" title=\"Question 9. Why are potassium and cesium, rather than lithium used in photoelectric cells?\">Question 9. Why are potassium and cesium, rather than lithium used in photoelectric cells?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-10-when-alkali-metal-dissolves-in-liquid-ammonia-the-solution-can-acquire-different-colours-explain-the-reason-for-this-type-of-colour-change\" title=\"Question 10. When alkali metal dissolves in liquid ammonia, the solution can acquire different colours. Explain the reason for this type of colour change.\">Question 10. When alkali metal dissolves in liquid ammonia, the solution can acquire different colours. Explain the reason for this type of colour change.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-11-beryllium-and-magnesium-do-not-give-colour-to-flame-whereas-other-alkaline-earth-metals-do-so-why\" title=\"Question 11. Beryllium and magnesium do not give colour to flame whereas other alkaline earth metals do so. Why?\">Question 11. Beryllium and magnesium do not give colour to flame whereas other alkaline earth metals do so. Why?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-12-discuss-the-various-reactions-that-occur-in-the-solvay-process\" title=\"Question 12. Discuss the various reactions that occur in the Solvay process.\">Question 12. Discuss the various reactions that occur in the Solvay process.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-13-potassium-carbonate-cannot-be-prepared-by-solvay-process-why\" title=\"Question 13. Potassium carbonate cannot be prepared by Solvay process. Why?\">Question 13. Potassium carbonate cannot be prepared by Solvay process. Why?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-14-why-is-li2co3-decomposed-at-a-lower-temperature-whereas-na2co3-at-higher-temperature\" title=\"Question 14. Why is Li2CO3\u00a0decomposed at a lower temperature whereas Na2CO3\u00a0at higher temperature?\">Question 14. Why is Li2CO3\u00a0decomposed at a lower temperature whereas Na2CO3\u00a0at higher temperature?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-15-compare-the-solubility-and-thermal-stability-of-the-following-compounds-of-the-alkali-metals-with-those-of-the-alkaline-earth-metals-a-nitrates-b-carbonates-c-sulphates\" title=\"Question 15. Compare the solubility and thermal stability of the following compounds of the alkali metals with those of the alkaline earth metals. (a) Nitrates (b) Carbonates (c) Sulphates\">Question 15. Compare the solubility and thermal stability of the following compounds of the alkali metals with those of the alkaline earth metals. (a) Nitrates (b) Carbonates (c) Sulphates<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-16-starting-with-sodium-chloride-how-would-you-proceed-to-prepare-i-sodium-metal-ii-sodium-hydroxide-iii-sodium-peroxide-iv-sodium-carbonate\" title=\"Question 16. Starting with sodium chloride how would you proceed to prepare. (i) Sodium metal (ii) Sodium hydroxide (iii) Sodium peroxide (iv) Sodium carbonate?\">Question 16. Starting with sodium chloride how would you proceed to prepare. (i) Sodium metal (ii) Sodium hydroxide (iii) Sodium peroxide (iv) Sodium carbonate?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-17-what-happens-when-i-magnesium-is-burnt-in-air-ii-quick-lime-is-heated-with-silica-iii-chlorine-reacts-with-slaked-lime-iv-calcium-nitrate-is-heated\" title=\"Question 17. What happens when (i) magnesium is burnt in air, (ii) Quick lime is heated with silica (iii) chlorine reacts with slaked lime (iv) calcium nitrate is heated?\">Question 17. What happens when (i) magnesium is burnt in air, (ii) Quick lime is heated with silica (iii) chlorine reacts with slaked lime (iv) calcium nitrate is heated?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-18-describe-two-important-uses-of-each-of-the-following-i-caustic-soda-ii-sodium-carbonate-iii-quick-lime\" title=\"Question 18. Describe two important uses of each of the following: , (i) caustic soda (ii) sodium carbonate (iii) quick lime\">Question 18. Describe two important uses of each of the following: , (i) caustic soda (ii) sodium carbonate (iii) quick lime<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-19-draw-the-structure-of-i-becl2-vapour-ii-becl2-solid\" title=\"Question 19. Draw the structure of (i) BeCl2\u00a0(Vapour), (ii) BeCl2 (solid).\">Question 19. Draw the structure of (i) BeCl2\u00a0(Vapour), (ii) BeCl2 (solid).<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-20-the-hydroxides-and-carbonates-of-sodium-and-potassium-are-easily-soluble-in-water-while-the-corresponding-salts-of-magnesium-and-calcium-are-sparingly-soluble-in-water-explain\" title=\"Question 20. The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water. Explain.\">Question 20. The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water. Explain.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-21-describe-the-importance-of-the-following-i-limestone-ii-cement-iii-plaster-of-paris\" title=\"Question 21. Describe the importance of the following: (i) Limestone (ii) Cement (iii) Plaster of Paris.\">Question 21. Describe the importance of the following: (i) Limestone (ii) Cement (iii) Plaster of Paris.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-22-why-are-lithium-salts-commonly-hydrated-and-those-of-the-other-alkali-metal-ions-usually-anhydrous\" title=\"Question 22. Why are lithium salts commonly hydrated and those of the other alkali metal ions usually anhydrous?\">Question 22. Why are lithium salts commonly hydrated and those of the other alkali metal ions usually anhydrous?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-23-why-is-lif-almost-insoluble-in-water-whereas-licl-soluble-not-only-in-water-but-also-in-acetone\" title=\"Question 23. Why is LiF almost insoluble in water whereas LiCl soluble not only in water but also in acetone?\">Question 23. Why is LiF almost insoluble in water whereas LiCl soluble not only in water but also in acetone?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-24-explain-the-significance-of-sodium-potassium-magnesium-and-calcium-in-biological-fluids\" title=\"Question 24. Explain the significance of sodium, potassium, magnesium and calcium in biological fluids.\">Question 24. Explain the significance of sodium, potassium, magnesium and calcium in biological fluids.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-25-what-happens-when-i-sodium-metal-is-dropped-in-water-ii-sodium-metal-is-heated-in-free-supply-of-air-iii-sodium-peroxide-dissolves-in-water\" title=\"Question 25. What happens when (i) Sodium metal is dropped in water? (ii) Sodium metal is heated in free supply of air? (iii) Sodium peroxide dissolves in water?\">Question 25. What happens when (i) Sodium metal is dropped in water? (ii) Sodium metal is heated in free supply of air? (iii) Sodium peroxide dissolves in water?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-26-comment-on-each-of-the-following-observations-a-the-mobilities-of-the-alkali-metal-ions-in-aqueous-solution-are-li-%3c-na-ms-where-m-ca-sr-or-ba-is-nearly-constant\" title=\"Question 26. Comment on each of the following observations: (a) The mobilities of the alkali metal ions in aqueous solution are Li+\u00a0&lt; Na+\u00a0&lt;K+\u00a0&lt; Rb+\u00a0&lt; Cs+ (b) Lithium is the only alkali metal to form a nitride directly. (c) Ee for M2+\u00a0(aq) + 2e\u2013\u00a0\u2014&gt; M(s) (where M = Ca, Sr, or Ba) is nearly constant.\">Question 26. Comment on each of the following observations: (a) The mobilities of the alkali metal ions in aqueous solution are Li+\u00a0&lt; Na+\u00a0&lt;K+\u00a0&lt; Rb+\u00a0&lt; Cs+ (b) Lithium is the only alkali metal to form a nitride directly. (c) Ee for M2+\u00a0(aq) + 2e\u2013\u00a0\u2014&gt; M(s) (where M = Ca, Sr, or Ba) is nearly constant.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-27-state-as-to-why-a-a-solution-of-na2co3-is-alkaline-b-alkali-metals-are-prepared-by-electrolysis-of-their-fused-chlorides-c-sodium-is-found-to-be-move-useful-than-potassium\" title=\"Question 27. State as to why (a) a solution of Na2CO3\u00a0is alkaline? (b) alkali metals are prepared by electrolysis of their fused chlorides? (c) Sodium is found to be move useful than potassium?\">Question 27. State as to why (a) a solution of Na2CO3\u00a0is alkaline? (b) alkali metals are prepared by electrolysis of their fused chlorides? (c) Sodium is found to be move useful than potassium?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-28write-balanced-equations-for-reactions-between-a-na2o2-and-water-b-ko2-and-water-c-na2o-and-co2\" title=\"Question 28.Write balanced equations for reactions between. (a) Na2O2\u00a0and water (b) KO2\u00a0and water (c) Na2O and CO2\">Question 28.Write balanced equations for reactions between. (a) Na2O2\u00a0and water (b) KO2\u00a0and water (c) Na2O and CO2<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-29-how-would-you-explain-the-following-observations-i-beo-is-almost-insoluble-but-beso4-is-soluble-in-water-ii-bao-is-soluble-but-baso4is-insoluble-in-water-iii-lil-is-more-soluble-than-ki-in-ethanol\" title=\"Question 29. How would you explain the following observations? (i) BeO is almost insoluble but BeSO4\u00a0is soluble in water. (ii) BaO is soluble but BaSO4is insoluble in water. (iii) Lil is more soluble than KI in ethanol.\">Question 29. How would you explain the following observations? (i) BeO is almost insoluble but BeSO4\u00a0is soluble in water. (ii) BaO is soluble but BaSO4is insoluble in water. (iii) Lil is more soluble than KI in ethanol.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-30-which-of-the-alkali-metal-is-having-least-melting-point-a-na-b-k-c-rb-d-cs\" title=\"Question 30. Which of the alkali metal is having least melting point? (a) Na (b) K (c) Rb (d) Cs\">Question 30. Which of the alkali metal is having least melting point? (a) Na (b) K (c) Rb (d) Cs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-31-which-one-of-the-following-alkali-metals-give-hydrated-salts-a-li-b-na-c-k-d-cs\" title=\"Question 31. Which one of the following alkali metals give hydrated salts? (a) Li (b) Na (c) K (d) Cs\">Question 31. Which one of the following alkali metals give hydrated salts? (a) Li (b) Na (c) K (d) Cs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-32-which-one-of-the-following-alkaline-earth-metal-carbonates-is-thermally-most-stable-a-mgco3-b-caco3-c-srco3-d-baco3\" title=\"Question 32. Which one of the following alkaline earth metal carbonates is thermally most stable? (a) MgCO3\u00a0(b) CaCO3\u00a0(c) SrCO3\u00a0(d) BaCO3\">Question 32. Which one of the following alkaline earth metal carbonates is thermally most stable? (a) MgCO3\u00a0(b) CaCO3\u00a0(c) SrCO3\u00a0(d) BaCO3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#more-questions-solved\" title=\"MORE QUESTIONS SOLVED\">MORE QUESTIONS SOLVED<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#ncert-solutions-for-class-11-chemistry-chapter-10-very-short-answer-type-questions\" title=\"NCERT Solutions for Class 11 Chemistry Chapter 10 Very Short Answer Type Questions\">NCERT Solutions for Class 11 Chemistry Chapter 10 Very Short Answer Type Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-38\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-1-name-the-alkali-metal-which-shows-diagonal-relationship-with-magnesium\" title=\"Question 1. Name the alkali metal which shows diagonal relationship with magnesium?\">Question 1. Name the alkali metal which shows diagonal relationship with magnesium?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-39\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-2-why-alkali-and-alkaline-earth-metals-cannot-be-obtained-by-chemical-reduction-method\" title=\"Question 2. Why alkali and alkaline earth metals cannot be obtained by chemical reduction method?\">Question 2. Why alkali and alkaline earth metals cannot be obtained by chemical reduction method?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-40\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-3-name-the-compounds-used-for-the-manufacture-of-washing-soda-by-solvay-process\" title=\"Question 3. Name the compounds used for the manufacture of washing soda by Solvay process.\">Question 3. Name the compounds used for the manufacture of washing soda by Solvay process.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-41\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-4-which-electrolyte-is-used-to-obtain-sodium-in-castner%e2%80%99s-process\" title=\"Question 4. Which electrolyte is used to obtain sodium in Castner\u2019s process?\">Question 4. Which electrolyte is used to obtain sodium in Castner\u2019s process?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-42\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-5-what-happens-when-crystals-of-washing-soda-are-exposed-to-air\" title=\"Question 5. What happens when crystals of washing soda are exposed to air?\">Question 5. What happens when crystals of washing soda are exposed to air?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-43\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-6-name-the-alkaline-earth-metals-whose-salt-do-not-impart-colour-to-a-non-luminous-flame\" title=\"Question 6. Name the alkaline earth metals whose salt do not impart colour to a non-luminous flame.\">Question 6. Name the alkaline earth metals whose salt do not impart colour to a non-luminous flame.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-44\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-7-what-is-dead-burnt-plaster\" title=\"Question 7. What is dead burnt plaster?\">Question 7. What is dead burnt plaster?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-45\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-8-what-is-quick-lime-what-happens-when-it-is-added-to-water\" title=\"Question 8. What is Quick lime? What happens when it is added to water?\">Question 8. What is Quick lime? What happens when it is added to water?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-46\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-9-arrange-the-following-in-the-increasing-order-of-solubility-in-water-mgcl2-cacl2-srcl2-bacl2\" title=\"Question 9. Arrange the following in the increasing order of solubility in water. \u00a0MgCl2, CaCl2, SrCl2, BaCl2\">Question 9. Arrange the following in the increasing order of solubility in water. \u00a0MgCl2, CaCl2, SrCl2, BaCl2<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-47\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-10-give-the-chemical-formula-of-epsom-salt\" title=\"Question 10. Give the chemical formula of Epsom salt.\">Question 10. Give the chemical formula of Epsom salt.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-48\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-11-how-would-you-prepare-sodium-silicate-from-silica\" title=\"Question 11. How would you prepare sodium silicate from silica?\">Question 11. How would you prepare sodium silicate from silica?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-49\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-12-what-happens-when-sodium-metal-is-heated-in-free-supply-of-air\" title=\"Question 12. What happens when sodium metal is heated in free supply of air?\">Question 12. What happens when sodium metal is heated in free supply of air?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-50\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#question-13-what-is-the-general-name-for-elements-of-group-1\" title=\"Question 13. What is the general name for elements of group 1 ?\">Question 13. What is the general name for elements of group 1 ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-51\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#faq-cbse-ncert-solutions-for-class-11-chemistry-chapter-10-the-s-block-elements\" title=\"FAQ: CBSE NCERT Solutions For Class 11 Chemistry Chapter 10 The S Block Elements\">FAQ: CBSE NCERT Solutions For Class 11 Chemistry Chapter 10 The S Block Elements<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-52\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#how-ncert-solutions-for-class-11-chemistry-chapter-10-helpful-for-class-11-students\" title=\"How NCERT Solutions for Class 11 Chemistry Chapter 10 helpful for Class 11 students?\">How NCERT Solutions for Class 11 Chemistry Chapter 10 helpful for Class 11 students?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-53\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#are-these-ncert-solutions-for-class-11-chemistry-chapter-10-available-for-free-download\" title=\"Are these NCERT Solutions for Class 11 Chemistry Chapter 10 available for free download? \">Are these NCERT Solutions for Class 11 Chemistry Chapter 10 available for free download? <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-54\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#how-many-questions-are-there-in-ncert-solutions-for-class-11-chemistry-chapter-10\" title=\"How many questions are there in NCERT Solutions for Class 11 Chemistry Chapter 10? \">How many questions are there in NCERT Solutions for Class 11 Chemistry Chapter 10? <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-55\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/#what-are-the-topics-included-in-cert-solutions-for-class-11-chemistry-chapter-10\" title=\"What are the topics included in CERT Solutions for Class 11 Chemistry Chapter 10? \">What are the topics included in CERT Solutions for Class 11 Chemistry Chapter 10? <\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"ncert-solutions-for-class-11-chemistry-chapter-10-the-s-block-elements\"><\/span>NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements are provided here in pdf format thereby giving better accessibility for all the students. The chapter 10 pdf solutions for Class 11 chemistry contains answers to the questions provided in the textbook along with exemplary problems, MCQ questions from previous year question papers and CBSE sample papers.<\/p>\n<p>By referring to these solutions, students can have a quick revision of the entire topic in a very short interval of time. Solutions for Class 11 Chemistry Chapter 10 serves as important study material for students preparing for examinations and other assignment.\u00a0<\/p>\n<p><a href=\"https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2020\/10\/chapter_10_the_s-block_elements.pdf\">NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements<\/a><\/p>\n<p>\u00a0<\/p>\n<div>\n<div>\n<div id=\"example1\" style=\"text-align: justify\">\u00a0<\/div>\n<p style=\"text-align: justify\">\n.pdfobject-container { height: 500px;}<br \/>\n.pdfobject { border: 1px solid #666; }<br \/>\n<\/p>\n<p style=\"text-align: justify\"><br \/>PDFObject.embed(&#8220;https:\/\/www.kopykitab.com\/blog\/wp-content\/uploads\/2020\/10\/chapter_10_the_s-block_elements.pdf&#8221;, &#8220;#example1&#8221;);<\/p>\n<p>The NCERT Solutions for Class 11 Chemistry Chapter 10 s block elements PDF is chapter 10 of your prescribed Chemistry textbook. This chapter entails all the vital elements from the s-block of the modern periodic table. It deals with all the properties, structural and functional characteristics, reactions and applications of the elements of the s-block.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"summary-about-class-11-chemistry-chapter-10-the-s-block-elements\"><\/span>Summary About Class 11 Chemistry Chapter 10 The s-Block Elements<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>An in-depth learning of this chapter from Chemistry will help you to get well-acquainted about Group 1 Elements: Electronic Configuration, Alkali Metals, Ionization Enthalpy, Atomic and Ionic Radii, Hydration Enthalpy, Physical Properties, Chemical Properties, General Characteristics and uses of the Compounds of the Alkali Metals, Oxides and Hydroxides, Halides, Salts of Oxo-Acids,.<\/p>\n<p>Anomalous Properties pf Lithium, difference between Lithium and some other Alkali Metals, important Points of similarities between Lithium and Magnesium, Biological Importance of Sodium and Potassium.<\/p>\n<p>Some Important Compounds of Sodium, Group 2 Elements : Physical Properties, Chemical Properties, the Atomic Electronic and Ionic Radii Configuration, Hydration Enthalpies, Uses, General Characteristics of Compounds of the Alkaline Earth Metals.<\/p>\n<p>Anomalous Behaviour of Beryllium, Some Important Compounds of Calcium and Biological Importance of Magnesium and Calcium, Diagonal Relationship between Aluminium and Beryllium,.<\/p>\n<p>Once you have studied the chapter, you will be able to describe the general characteristics of the alkali metals and their compounds; explain the general characteristics of the alkaline earth metals and their compounds.<\/p>\n<p>manufacture description, properties and uses of industrially important sodium and calcium compounds including Portland cement; appreciate the biological significance of sodium, potassium, magnesium and calcium. Class 11 Chemistry, Chapter 10, s-block elements is an important part of Unit 10.<\/p>\n<p>Get the most accurate and detailed NCERT Solution for Class 11 Chemistry Chapter 10 (The s-Block Elements) solved by expert Chemistry teachers. We provide solutions for questions given in NCERT Solutions for Class 11 Chemistry Chapter 10 Chemistrionicy text-book as per CBSE Board guidelines from the latest NCERT book for Class 11 Chemistry.<\/p>\n<p>The topics and sub-topics in NCERT Solutions for Class 11 Chemistry Chapter 10 .The s-Block Elements are given below.<\/p>\n<ul>\n<li>Ex 10.1 &#8211; GROUP 1 ELEMENTS: ALKALI METALS<\/li>\n<li>Ex 10.2 &#8211; GENERAL CHARACTERISTICS OF THE COMPOUNDS OF THE ALKALI METALS<\/li>\n<li>Ex 10.2.1 &#8211; Oxides and Hydroxides<\/li>\n<li>Ex 10.2.2 &#8211; Halides<\/li>\n<li>Ex 10.2.3 &#8211; Salts of Oxo-Acids<\/li>\n<li>Ex 10.3 &#8211; ANOMALOUS PROPERTIES OF\u00a0LITHIUM<\/li>\n<li>Ex 10.4 &#8211; SOME IMPORTANT COMPOUNDS OF SODIUM<\/li>\n<li>Ex 10.5 &#8211; BIOLOGICAL IMPORTANCE OF SODIUM AND POTASSIUM<\/li>\n<li>Ex 10.6 &#8211; GROUP 2 ELEMENTS : ALKALINE EARTH METALS<\/li>\n<li>Ex 10.7 &#8211; GENERAL CHARACTERISTICS OF COMPOUNDS OF THE ALKALINE EARTH METALS<\/li>\n<li>Ex 10.8 &#8211; ANOMALOUS BEHAVIOUR OF BERYLLIUM<\/li>\n<li>Ex 10.9 &#8211; SOME IMPORTANT COMPOUNDS OF CALCIUM<\/li>\n<li>Ex 10.10 &#8211; BIOLOGICAL IMPORTANCE OF MAGNESIUM AND CALCIUM.\u00a0<\/li>\n<\/ul>\n<p>We cover all exercises in the chapter given below:-\u00a0<\/p>\n<p>Chapter 10 &#8211; 32 Questions with solutions.\u00a0<\/p>\n<h2><span class=\"ez-toc-section\" id=\"access-ncert-solutions-for-class-11-chemistry-chapter-10\"><\/span>Access NCERT Solutions For Class 11 Chemistry Chapter 10<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"question-1-what-are-the-common-physical-and-chemical-features-of-alkali-metals\"><\/span><strong>Question 1. What are the common physical and chemical features of alkali metals?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0<strong>Physical properties of alkali metals:<\/strong><\/p>\n<ul>\n<li>Alkali metals have low ionization enthalpies.<\/li>\n<li>Alkali metals are highly electropositive in nature.<\/li>\n<li>Alkali metals exhibit +1 oxidation states in their compounds.<\/li>\n<li>Alkali metals impart characteristic colours to the flame.<\/li>\n<\/ul>\n<p><strong>Chemical properties of alkali metals:<\/strong><\/p>\n<ul>\n<li>Alkali metals are highly reactive in nature.<\/li>\n<li>Alkali metals hydroxides are highly basic in nature.<\/li>\n<li>Alkali metals dissolve in liquid ammonia to form blue and conducting solution.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"question-2-discuss-the-general-characteristics-and-gradation-in-properties-of-alkaline-earth-metals\"><\/span><strong>Question 2. Discuss the general characteristics and gradation in properties of alkaline earth metals.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong><\/p>\n<ul>\n<li>Atomic size goes on increasing down the group.<\/li>\n<li>Ionisation energy goes on decreasing down the group.<\/li>\n<li>They are harder than alkali metals.<\/li>\n<li>They are less electropositive than alkali metals.<\/li>\n<li>Electropositive character increases on going down the group.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"question-3-why-are-alkali-metals-not-found-in-nature\"><\/span><strong>Question 3. Why are alkali metals not found in nature?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0Alkali metals are highly reactive in nature. That\u2019s why they always exist in combined state in nature.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-4-find-out-the-oxidation-state-of-sodium-in-na2o2\"><\/span><strong>Question 4. Find out the oxidation state of sodium in Na<sub>2<\/sub>O<sub>2<\/sub>.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0Let x be the oxidation state of Na in Na<sub>2<\/sub>O<sub>2 <\/sub>\u00a02x + 2 (-1) = 0 2x \u2013 2 = 0 2x = 2 x = +1.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-5-explain-why-is-sodium-less-reactive-than-potassium\"><\/span><strong>Question 5. Explain why is sodium less reactive than potassium.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0It is because ionization enthalpy \u2206H<sub>i<\/sub>\u00a0of potassium = 419 kJ mol\u00a0<sup>-1<\/sup>.<br \/>Ionization enthalpy of sodium = 496 KJ mol. Since Ionization enthalpy of potassium is less than that of sodium, potassium is more reactive than sodium.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-6-compare-the-alkali-metals-and-alkaline-earth-metals-with-respect-to-i-ionization-enthalpy-ii-basicity-of-oxides-iii-solubility-of-hydroxides\"><\/span><strong>Question 6. Compare the alkali metals and alkaline earth metals with respect to (i) ionization enthalpy, (ii) basicity of oxides, (iii) solubility of hydroxides.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0(i) Ionization enthalpy. Because of high nuclear charge the ionization enthalpy<br \/>of alkaline earth metals are higher than those of the corresponding alkali metals.<br \/>(ii) Basicity of oxides. Basicity of oxides of alkali metals are higher than that of alkaline earth metals.<br \/>(iii) Solubility of hydroxides of alkali metals are higher than that of alkaline earth metals. Alkali metals due to lower ionization enthalpy are more electropositive than the corresponding group 2 elements.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-7-in-what-ways-lithium-shows-similarities-to-magnesium-in-its-chemical-behaviour\"><\/span><strong>Question 7. In what ways lithium shows similarities to magnesium in its chemical behaviour?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong><\/p>\n<ul>\n<li>Both react with nitrogen to form nitrides.<\/li>\n<li>Both react with 02 to form monoxides.<\/li>\n<li>Both the elements have the tendency to form covalent compounds.<\/li>\n<li>Both can form complex compounds.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"question-8-explain-why-can-alkali-and-alkaline-earth-metals-not-be-obtained-by-chemical-reduction-method\"><\/span><strong>Question 8. Explain why can alkali and alkaline earth metals not be obtained by chemical reduction method.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong> Alkali and alkaline earth metals are themselves better recusing agents, and reducing agents better than alkali metals are not available. That is why these metals are not obtained by chemical reduction methods.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-9-why-are-potassium-and-cesium-rather-than-lithium-used-in-photoelectric-cells\"><\/span><b>Question 9. Why are potassium and cesium, rather than lithium used in photoelectric cells?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong> Potassium and cesium have much lower ionization enthalpy than that of lithium. As a result, these metals easily emit electrons on exposure to light. Due to this, K and Cs are used in photoelectric cells rather than lithium.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-10-when-alkali-metal-dissolves-in-liquid-ammonia-the-solution-can-acquire-different-colours-explain-the-reason-for-this-type-of-colour-change\"><\/span><strong>Question 10. When alkali metal dissolves in liquid ammonia, the solution can acquire different colours. Explain the reason for this type of colour change.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0Alkali metals dissolve in liquid ammonia and give deep blue solutions which are conducting in nature because ammoniated electrons absorb energy in the visible region of light and impart blue colour.<br \/><img src=\"https:\/\/www.learncbse.in\/wp-content\/uploads\/2020\/11\/NCERT-Solutions-for-Class-11-Chemistry-Chapter-10-The-s-Block-Elements-Q10.png\" alt=\"NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements Q10\" width=\"422\" height=\"60\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-11-beryllium-and-magnesium-do-not-give-colour-to-flame-whereas-other-alkaline-earth-metals-do-so-why\"><\/span><strong>Question 11. Beryllium and magnesium do not give colour to flame whereas other alkaline earth metals do so. Why?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0Due to small size, the ionization enthalpies of Be and Mg are much higher than those of other alkaline earth metals. Therefore, a large amount of energy is needed to excite their valence electron, and that\u2019s why they do not impart colour to the flame.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-12-discuss-the-various-reactions-that-occur-in-the-solvay-process\"><\/span><strong>Question 12. Discuss the various reactions that occur in the Solvay process.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong><br \/><img src=\"https:\/\/www.learncbse.in\/wp-content\/uploads\/2020\/11\/NCERT-Solutions-for-Class-11-Chemistry-Chapter-10-The-s-Block-Elements-Q12.png\" alt=\"NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements Q12\" width=\"536\" height=\"151\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-13-potassium-carbonate-cannot-be-prepared-by-solvay-process-why\"><\/span><strong>Question 13. Potassium carbonate cannot be prepared by Solvay process. Why?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0Potassium carbonate being more soluble than sodium bicarbonate does not get precipitated when CO<sub>2<\/sub>\u00a0is passed through a concentrated solution of KCl saturated with ammonia.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-14-why-is-li2co3-decomposed-at-a-lower-temperature-whereas-na2co3-at-higher-temperature\"><\/span><strong>Question 14. Why is Li<sub>2<\/sub>CO<sub>3<\/sub>\u00a0decomposed at a lower temperature whereas Na<sub>2<\/sub>CO<sub>3<\/sub>\u00a0at higher temperature?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0Li<sub>2<\/sub>CO<sub>3\u00a0<\/sub>is a covalent compound whereas Na<sub>2<\/sub>CO<sub>3<\/sub>\u00a0is an ionic compound. Therefore, Lattice energy of Na<sub>2<\/sub>CO<sub>3<\/sub>\u00a0is higher than that of Li<sub>2<\/sub>CO<sub>3<\/sub>. Thus, LiCO<sub>3<\/sub>\u00a0is decomposed at a lower temperature.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-15-compare-the-solubility-and-thermal-stability-of-the-following-compounds-of-the-alkali-metals-with-those-of-the-alkaline-earth-metals-a-nitrates-b-carbonates-c-sulphates\"><\/span><strong>Question 15. Compare the solubility and thermal stability of the following compounds of the alkali metals with those of the alkaline earth metals.<\/strong><br \/><strong>(a) Nitrates (b) Carbonates (c) Sulphates<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0(a) Nitrates of both group 1 and group 2 elements are soluble in water because hydration energy is more than the lattice energy.<br \/>Nitrates of both group 1 and group 2 elements are thermally unstable but they decompose differently except LiCO<sub>3<\/sub>\u00a0e.g.<br \/><img src=\"https:\/\/www.learncbse.in\/wp-content\/uploads\/2020\/11\/NCERT-Solutions-for-Class-11-Chemistry-Chapter-10-The-s-Block-Elements-Q15.png\" alt=\"NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements Q15\" width=\"393\" height=\"141\" \/><\/p>\n<p>(b) Carbonates of group 1 elements are soluble in water except Li<sub>2<\/sub>CO<sub>3<\/sub>\u00a0They are also thermally stable except Li<sub>2<\/sub>CO<sub>3<\/sub><br \/><img src=\"https:\/\/www.learncbse.in\/wp-content\/uploads\/2020\/11\/NCERT-Solutions-for-Class-11-Chemistry-Chapter-10-The-s-Block-Elements-Q15.1.png\" alt=\"NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements Q15.1\" width=\"255\" height=\"36\" \/><br \/>Group 2 carbonates are insoluble in water because their Lattice energy are higher than hydration energy.<\/p>\n<p>Thermal stability of carbonates of group 2 increases down the group because Lattice energy goes no increasing due to increase in ionic character.<\/p>\n<p>(c) Sulphates of group 1 are soluble in water except Li<sub>2<\/sub>SO<sub>4<\/sub>. They are thermally stable.<br \/>Solubility of sulphates of group 2 decreases down the group because Lattice energy dominates over hydration energy.<\/p>\n<p>Sulphates of group 2 elements are thermally stable and increasing down the group due to increases in Lattice energy.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-16-starting-with-sodium-chloride-how-would-you-proceed-to-prepare-i-sodium-metal-ii-sodium-hydroxide-iii-sodium-peroxide-iv-sodium-carbonate\"><\/span><strong>Question 16. Starting with sodium chloride how would you proceed to prepare.<\/strong><br \/><strong>(i) Sodium metal (ii) Sodium hydroxide<\/strong><br \/><strong>(iii) Sodium peroxide (iv) Sodium carbonate?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0(i) Sodium metal is manufactured by electrolysis of a fused mass of NaCl 40% and CaCl<sub>2<\/sub>\u00a060% in Down\u2019s cell at 873 K, using iron as cathode and graphite as anode. Na is liberated at the cathode.<br \/><strong>At cathode:<\/strong><br \/>Na<sup>+<\/sup>\u00a0+ e<sup>\u2013<\/sup>\u00a0\u2014\u2013&gt; Na (l)<br \/><strong>At anode:<\/strong><br \/>2Cl<sup>\u2013<\/sup>\u00a0(melt) \u2014\u2014-&gt;\u00a0Cl<sub>2<\/sub>\u00a0(g) + 2e<sup>\u2013<\/sup>.<\/p>\n<p>(ii) Sodium hydroxide is manufactured by electrolysis of an aqueous solution of NaCl (brine) in Castner-Kellner cell.<br \/><strong>At cathode:<\/strong><br \/>Na<sup>+<\/sup>\u00a0+ e<sup>\u2013<\/sup>\u00a0\u2014\u2013&gt; Na<br \/>2Na + Hg \u2014\u2014-&gt;Na \u2013 Hg + 2H<sub>2<\/sub>0<br \/>2Na- Hg + 2H<sub>2<\/sub>0\u2014\u2014&gt;2NaOH +H<sub>2<\/sub>\u00a0+Hg<br \/><strong>At anode:<\/strong><br \/>Cl<sup>\u2013<\/sup>\u00a0\u2013 e<sup>\u2013<\/sup>\u00a0\u2014\u2014-&gt;Cl<br \/>Cl + Cl\u2014\u2014\u2013&gt;Cl<sub>2<\/sub><\/p>\n<p>(iii) Sodium peroxide:<br \/>4Na + 0<sub>2<\/sub>\u00a02Na<sub>2<\/sub>O + 0<sub>2<\/sub><br \/>(iv)Sodium carbonate is obtained by Solvay ammonia process.<br \/><img src=\"https:\/\/www.learncbse.in\/wp-content\/uploads\/2020\/11\/NCERT-Solutions-for-Class-11-Chemistry-Chapter-10-The-s-Block-Elements-Q16.png\" alt=\"NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements Q16\" width=\"485\" height=\"61\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-17-what-happens-when-i-magnesium-is-burnt-in-air-ii-quick-lime-is-heated-with-silica-iii-chlorine-reacts-with-slaked-lime-iv-calcium-nitrate-is-heated\"><\/span><strong>Question 17. What happens when (i) magnesium is burnt in air, (ii) Quick lime is heated with silica (iii) chlorine reacts with slaked lime (iv) calcium nitrate is heated?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong><br \/><img src=\"https:\/\/www.learncbse.in\/wp-content\/uploads\/2020\/11\/NCERT-Solutions-for-Class-11-Chemistry-Chapter-10-The-s-Block-Elements-Q17.png\" alt=\"NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements Q17\" width=\"499\" height=\"134\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-18-describe-two-important-uses-of-each-of-the-following-i-caustic-soda-ii-sodium-carbonate-iii-quick-lime\"><\/span><strong>Question 18. Describe two important uses of each of the following: ,<\/strong><br \/><strong>(i) caustic soda (ii) sodium carbonate (iii) quick lime<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>\u00a0(i) Caustic soda<br \/>(a) It is used in the manufacturing of soap paper, artificial silk etc.<br \/>(b) It is used in textile industries.<\/p>\n<p>(ii) Sodium carbonate<br \/>(a) Used in the softening of water, for laundry and cleaning purposes.<br \/>(b) It is used in glass manufacturing.<\/p>\n<p>(iii) Quick lime<br \/>(a) It is used in the preparation of bleaching powder.<br \/>(b) Used in the purification of sugar and in the manufacturing of cement.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-19-draw-the-structure-of-i-becl2-vapour-ii-becl2-solid\"><\/span><b>Question 19. Draw the structure of (i) BeCl<\/b><sub style=\"font-weight: bold\">2<\/sub><b>\u00a0(Vapour), (ii) BeCl<\/b><sub style=\"font-weight: bold\">2<\/sub><b> (solid).<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0BeCl<sub>2<\/sub> (Vapour)<br \/>In the Vapour state, it exists as a chlorobridged dimer.<br \/><img src=\"https:\/\/www.learncbse.in\/wp-content\/uploads\/2020\/11\/NCERT-Solutions-for-Class-11-Chemistry-Chapter-10-The-s-Block-Elements-Q19.png\" alt=\"NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements Q19\" width=\"586\" height=\"210\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-20-the-hydroxides-and-carbonates-of-sodium-and-potassium-are-easily-soluble-in-water-while-the-corresponding-salts-of-magnesium-and-calcium-are-sparingly-soluble-in-water-explain\"><\/span><strong>Question 20. The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water. Explain.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0Since group 1 hydroxides and carbonates due to large size contain higher hydration energy than the lattice energy so, they are easily soluble in water. Whereas, in magnesium and calcium due to small size their lattice energy dominates over hydration energy they are sparingly soluble in water.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-21-describe-the-importance-of-the-following-i-limestone-ii-cement-iii-plaster-of-paris\"><\/span><strong>Question 21. Describe the importance of the following:<\/strong><br \/><strong>(i) Limestone (ii) Cement (iii) Plaster of Paris.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0Limestone:<\/strong><\/p>\n<ul>\n<li>Extensively used in the manufacturing of high quality paper.<\/li>\n<li>Used as mild abrasive in toothpaste.<\/li>\n<li>As a filler in cosmetics.<\/li>\n<li>Used as an antacid.<\/li>\n<\/ul>\n<p><strong>Cement:<\/strong><\/p>\n<ul>\n<li>An important building material.<\/li>\n<li>Used in concrete and reinforced cement.<\/li>\n<\/ul>\n<p><strong>Plaster of Paris:<\/strong><\/p>\n<ul>\n<li>Used in plasters.<\/li>\n<li>In dentistry, in ornamental work for making statues.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"question-22-why-are-lithium-salts-commonly-hydrated-and-those-of-the-other-alkali-metal-ions-usually-anhydrous\"><\/span><strong>Question 22. Why are lithium salts commonly hydrated and those of the other alkali metal ions usually anhydrous?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0Due to smallest size, Li<sup>+<\/sup>\u00a0can polarize water molecules easily than the other alkali metal ions.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-23-why-is-lif-almost-insoluble-in-water-whereas-licl-soluble-not-only-in-water-but-also-in-acetone\"><\/span><strong>Question 23. Why is LiF almost insoluble in water whereas LiCl soluble not only in water but also in acetone?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>It is due to high lattice energy of LiF as compared to LiCl.<br \/>LiCl is soluble in water because its hydration energy is higher than its lattice energy.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-24-explain-the-significance-of-sodium-potassium-magnesium-and-calcium-in-biological-fluids\"><\/span><strong>Question 24. Explain the significance of sodium, potassium, magnesium and calcium in biological fluids.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0Sodium ions:<\/strong><\/p>\n<ul>\n<li>Na<sup>+<\/sup>\u00a0ions participate in the transmission of nerve signals, in regulating the flow of water across cell membranes.<\/li>\n<li>In the transport of sugars and amino acids into cell.<\/li>\n<\/ul>\n<p><strong>Potassium ions:<\/strong><\/p>\n<ul>\n<li>They activate many enzymes.<\/li>\n<li>Participate in the oxidation of glucose to produce ATP.<\/li>\n<\/ul>\n<p><strong>Magnesium ions:<\/strong><\/p>\n<ul>\n<li>\u00a0All enzymes that utilize ATP in phosphate transfer require magnesium as a cofactor.<\/li>\n<li>Mg is the main pigment for the absorption of light in plants.<\/li>\n<\/ul>\n<p><strong>Calcium:<\/strong><\/p>\n<ul>\n<li>\u00a0Ca<sup>2+<\/sup>\u00a0ions are present in bones.<\/li>\n<li>\u00a0plays important roles in neuromuscular function.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"question-25-what-happens-when-i-sodium-metal-is-dropped-in-water-ii-sodium-metal-is-heated-in-free-supply-of-air-iii-sodium-peroxide-dissolves-in-water\"><\/span><strong>Question 25. What happens when<\/strong><br \/><strong>(i) Sodium metal is dropped in water?<\/strong><br \/><strong>(ii) Sodium metal is heated in free supply of air?<\/strong><br \/><strong>(iii) Sodium peroxide dissolves in water?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>(i) 2Na + 2H<sub>2<\/sub>O \u2014\u2014\u2013&gt; 2NaOH + H<sub>2<\/sub><br \/>(ii) 2Na + O<sub>2<\/sub>\u00a0\u2014\u2014\u2014&gt; Na<sub>2<\/sub>O<sub>2<\/sub><br \/>(iii) Na<sub>2<\/sub>O<sub>2<\/sub>\u00a0+ 2H20 \u2014\u2014\u2014&gt; 2NaOH + H<sub>2<\/sub>O<sub>2<\/sub><\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-26-comment-on-each-of-the-following-observations-a-the-mobilities-of-the-alkali-metal-ions-in-aqueous-solution-are-li-%3c-na-ms-where-m-ca-sr-or-ba-is-nearly-constant\"><\/span><strong>Question 26. Comment on each of the following observations:<\/strong><br \/><strong>(a) The mobilities of the alkali metal ions in aqueous solution are Li<sup>+<\/sup>\u00a0&lt; Na<sup>+<\/sup>\u00a0&lt;K<sup>+<\/sup>\u00a0&lt; Rb<sup>+<\/sup>\u00a0&lt; Cs<sup>+<\/sup><\/strong><br \/><strong>(b) Lithium is the only alkali metal to form a nitride directly.<\/strong><br \/><strong>(c) Ee for M<sup>2+<\/sup>\u00a0(aq) + 2e<sup>\u2013<\/sup>\u00a0\u2014&gt; M(s) (where M = Ca, Sr, or Ba) is nearly constant.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>(a) Smaller the size of the ion, more highly it is hydrated and hence greater is the mass of the hydrated ion and thus the ionic mobility become lesser. The extent of hydration decreases in the order.<br \/>Li<sup>+<\/sup>\u00a0&lt; Na<sup>+<\/sup>\u00a0&lt;K<sup>+<\/sup>\u00a0&lt; Rb<sup>+<\/sup>\u00a0&lt; Cs<sup>+<\/sup><\/p>\n<p>Thus the mobility of Cs<sup>+<\/sup>\u00a0will be the highest.<br \/>(b) Due to its smaller size lithium can form nitride directly.<br \/>(c) It is because reduction potential depends upon sublimation energy, ionisation energy and hydration energy. Their resultant is almost constant for these ions.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-27-state-as-to-why-a-a-solution-of-na2co3-is-alkaline-b-alkali-metals-are-prepared-by-electrolysis-of-their-fused-chlorides-c-sodium-is-found-to-be-move-useful-than-potassium\"><\/span><strong>Question 27. State as to why<\/strong><br \/><strong>(a) a solution of Na<sub>2<\/sub>CO<sub>3<\/sub>\u00a0is alkaline?<\/strong><br \/><strong>(b) alkali metals are prepared by electrolysis of their fused chlorides?<\/strong><br \/><strong>(c) Sodium is found to be move useful than potassium?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>(a) Na<sub>2<\/sub>CO<sub>3<\/sub>\u00a0is a salt of a weak acid, carbonic acid (H<sub>2<\/sub>CO<sub>3<\/sub>) and a strong base NaOH. Thus it undergoes hydrolysis to produce strong base NaOH and its aqueous solution is alkaline in nature.<br \/>Na<sub>2<\/sub>CO<sub>3<\/sub>(s) + H<sub>2<\/sub>O(l)\u2014\u2014\u2014\u2013&gt;2NaOH<\/p>\n<p>(b) Because the discharge potential of alkali metals is much higher than that of hydrogen, therefore when the aqueous solution of any alkali metal chloride is subjected to electrolysis, H<sub>2<\/sub>, instead of the alkali metal, is produced at the cathode. Therefore alkali metals are prepared by electrolysis of their fused chlorides.<\/p>\n<p>(c) Since potassium is move reactive than sodium and it is found in nature to a less extent than Na, sodium is found to be more useful.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-28write-balanced-equations-for-reactions-between-a-na2o2-and-water-b-ko2-and-water-c-na2o-and-co2\"><\/span><strong>Question 28.Write balanced equations for reactions between.<\/strong><br \/><strong>(a) Na<sub>2<\/sub>O<sub>2<\/sub>\u00a0and water<\/strong><br \/><strong>(b) KO<sub>2<\/sub>\u00a0and water<\/strong><br \/><strong>(c) Na<sub>2<\/sub>O and CO<sub>2<\/sub><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>(a) Na<sub>2<\/sub>O<sub>2<\/sub>\u00a0+ 2H<sub>2<\/sub>O \u2014\u2014-&gt; 2Na0H + H<sub>2<\/sub>O<sub>2<\/sub><br \/>(b) 2KO<sub>2<\/sub>\u00a0+ 2H<sub>2<\/sub>O \u2014\u2014\u2014-&gt; 2K0H + O<sub>2<\/sub>+ H<sub>2<\/sub>O<sub>2<\/sub><br \/>(c) Na<sub>2<\/sub>O+ CO<sub>2<\/sub>\u00a0\u2014\u2014\u2014\u2013&gt;Na<sub>2<\/sub>CO<sub>3<\/sub><\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-29-how-would-you-explain-the-following-observations-i-beo-is-almost-insoluble-but-beso4-is-soluble-in-water-ii-bao-is-soluble-but-baso4is-insoluble-in-water-iii-lil-is-more-soluble-than-ki-in-ethanol\"><\/span><strong>Question 29. How would you explain the following observations?<\/strong><br \/><strong>(i) BeO is almost insoluble but BeSO<sub>4<\/sub>\u00a0is soluble in water.<\/strong><br \/><strong>(ii) BaO is soluble but BaSO<sub>4<\/sub>is insoluble in water.<\/strong><br \/><strong>(iii) Lil is more soluble than KI in ethanol.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>(i) Lattice energy of BeO is comparatively higher than the hydration energy. Therefore, it is almost insoluble in water. Whereas BeSO<sub>4<\/sub>\u00a0is ionic in nature and its hydration energy dominates the lattice energy.<\/p>\n<p>(ii) Both BaO and BaSO<sub>4\u00a0<\/sub>are ionic compounds but the hydration energy of BaO is higher than the lattice energy therefore it is soluble in water.<\/p>\n<p>(iii) Since the size of Li<sup>+<\/sup>\u00a0ion is very small in comparison to K<sup>+<\/sup> ion, it polarizes the electron cloud of I<sup>\u2013<\/sup>\u00a0ion to a great extent. Thus Lil dissolves in ethanol more easily than the KI.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-30-which-of-the-alkali-metal-is-having-least-melting-point-a-na-b-k-c-rb-d-cs\"><\/span><strong>Question 30. Which of the alkali metal is having least melting point?<\/strong><br \/><strong>(a) Na (b) K (c) Rb (d) Cs<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>Size of Cs is the biggest thus, its melting point is the lowest, (d) is correct.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-31-which-one-of-the-following-alkali-metals-give-hydrated-salts-a-li-b-na-c-k-d-cs\"><\/span><strong>Question 31. Which one of the following alkali metals give hydrated salts?<\/strong><br \/><strong>(a) Li (b) Na (c) K (d) Cs<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>Li<sup>+<\/sup>\u00a0is the smallest. Thus, it has the highest charge density and hence attracts the water molecules more strongly.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-32-which-one-of-the-following-alkaline-earth-metal-carbonates-is-thermally-most-stable-a-mgco3-b-caco3-c-srco3-d-baco3\"><\/span><strong>Question 32. Which one of the following alkaline earth metal carbonates is thermally most stable?<\/strong><br \/><strong>(a) MgCO<sub>3<\/sub>\u00a0(b) CaCO<sub>3<\/sub>\u00a0(c) SrCO<sub>3<\/sub>\u00a0(d) BaCO<sub>3<\/sub><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>(d) BaCO<sub>3<\/sub><\/p>\n<h3><span class=\"ez-toc-section\" id=\"more-questions-solved\"><\/span>MORE QUESTIONS SOLVED<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"ncert-solutions-for-class-11-chemistry-chapter-10-very-short-answer-type-questions\"><\/span>NCERT Solutions for Class 11 Chemistry Chapter 10 Very Short Answer Type Questions<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"question-1-name-the-alkali-metal-which-shows-diagonal-relationship-with-magnesium\"><\/span><strong>Question 1. Name the alkali metal which shows diagonal relationship with magnesium?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>\u00a0Li.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-2-why-alkali-and-alkaline-earth-metals-cannot-be-obtained-by-chemical-reduction-method\"><\/span><strong>Question 2. Why alkali and alkaline earth metals cannot be obtained by chemical reduction method?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>\u00a0Because alkali and alkaline earth metals are themselves stronger reducing agents than the majority of other reducing agents.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-3-name-the-compounds-used-for-the-manufacture-of-washing-soda-by-solvay-process\"><\/span><strong>Question 3. Name the compounds used for the manufacture of washing soda by Solvay process.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0NaCl, CaCO<sub>3<\/sub>\u00a0and NH<sub>3<\/sub>.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-4-which-electrolyte-is-used-to-obtain-sodium-in-castner%e2%80%99s-process\"><\/span><strong>Question 4. Which electrolyte is used to obtain sodium in Castner\u2019s process?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0Fused NaOH.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-5-what-happens-when-crystals-of-washing-soda-are-exposed-to-air\"><\/span><strong>Question 5. What happens when crystals of washing soda are exposed to air?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0Monohydrate (Na<sub>2<\/sub>CO<sub>3<\/sub>\u2013 H<sub>2<\/sub>O) is formed as a result of efflorescence.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-6-name-the-alkaline-earth-metals-whose-salt-do-not-impart-colour-to-a-non-luminous-flame\"><\/span><strong>Question 6. Name the alkaline earth metals whose salt do not impart colour to a non-luminous flame.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>\u00a0Beryllium does not impart colour to a non-luminous flame.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-7-what-is-dead-burnt-plaster\"><\/span><strong>Question 7. What is dead burnt plaster?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0It is anhydrous calcium sulphate (CaSO<sub>4<\/sub>).<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-8-what-is-quick-lime-what-happens-when-it-is-added-to-water\"><\/span><strong>Question 8. What is Quick lime? What happens when it is added to water?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>\u00a0CaO is quick lime. When it is added to water, Ca(OH)<sub>2<\/sub>\u00a0is formed.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-9-arrange-the-following-in-the-increasing-order-of-solubility-in-water-mgcl2-cacl2-srcl2-bacl2\"><\/span><strong>Question 9. Arrange the following in the increasing order of solubility in water.<\/strong><br \/><strong>\u00a0MgCl<sub>2<\/sub>, CaCl<sub>2<\/sub>, SrCl<sub>2<\/sub>, BaCl<sub>2<\/sub><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong>\u00a0BaCl<sub>2<\/sub>\u00a0&lt; SrCl<sub>2<\/sub>\u00a0&lt; CaCl<sub>2<\/sub>\u00a0&lt;MgCl<sub>2<\/sub><\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-10-give-the-chemical-formula-of-epsom-salt\"><\/span><strong>Question 10. Give the chemical formula of Epsom salt.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>MgSO<sub>4<\/sub>,7H<sub>2<\/sub>O<\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-11-how-would-you-prepare-sodium-silicate-from-silica\"><\/span><strong>Question 11. How would you prepare sodium silicate from silica?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong><br \/><img src=\"https:\/\/www.learncbse.in\/wp-content\/uploads\/2020\/11\/NCERT-Solutions-for-Class-11-Chemistry-Chapter-10-The-s-Block-Elements-VSAQ-Q11.png\" alt=\"NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements VSAQ Q11\" width=\"333\" height=\"47\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-12-what-happens-when-sodium-metal-is-heated-in-free-supply-of-air\"><\/span><strong>Question 12. What happens when sodium metal is heated in free supply of air?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:<\/strong> Sodium peroxide is formed.<br \/>2Na + O<sub>2<\/sub>\u00a0\u2014\u2014-&gt; Na<sub>2<\/sub>O<sub>2<\/sub><\/p>\n<h3><span class=\"ez-toc-section\" id=\"question-13-what-is-the-general-name-for-elements-of-group-1\"><\/span><strong>Question 13. What is the general name for elements of group 1 ?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Answer:\u00a0<\/strong>\u00a0Alkali metals<\/p>\n<p>We have covered the detailed guide on\u00a0<a href=\"http:\/\/cbse.nic.in\/newsite\/index.html\" target=\"_blank\" rel=\"noopener noreferrer\">CBSE<\/a> NCERT Solutions For Class 11 Chemistry Chapter 10 The S Block Elements. You should have proper CBSE 11th study material to excel at the level of preparation in the correct way. Feel free to ask any questions.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"faq-cbse-ncert-solutions-for-class-11-chemistry-chapter-10-the-s-block-elements\"><\/span>FAQ: CBSE NCERT Solutions For Class 11 Chemistry Chapter 10 The S Block Elements<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<\/div>\n<\/div>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1627558573775\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"how-ncert-solutions-for-class-11-chemistry-chapter-10-helpful-for-class-11-students\"><\/span>How NCERT Solutions for Class 11 Chemistry Chapter 10 helpful for Class 11 students?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>NCERT Solutions for Class 11 Chemistry Chapter 10 helps students to get a proper grasp of all the concepts of the subjects.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1627558591501\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"are-these-ncert-solutions-for-class-11-chemistry-chapter-10-available-for-free-download\"><\/span>Are these NCERT Solutions for Class 11 Chemistry Chapter 10 available for free download? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Yes, NCERT Solutions for Class 11 Chemistry Chapter 10 are available for free download.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1627558658166\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"how-many-questions-are-there-in-ncert-solutions-for-class-11-chemistry-chapter-10\"><\/span>How many questions are there in NCERT Solutions for Class 11 Chemistry Chapter 10? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>In NCERT Solutions for Class 11 Chemistry Chapter 10, there are 32 questions in the exercise.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1627558662236\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"what-are-the-topics-included-in-cert-solutions-for-class-11-chemistry-chapter-10\"><\/span>What are the topics included in CERT Solutions for Class 11 Chemistry Chapter 10? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>You can refer to the above article to get the CERT Solutions for Class 11 Chemistry Chapter 10. <\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions for Class 11 Chemistry Chapter 10 The s-Block Elements: In this NCERT Solutions for Class 11 Chemistry Chapter 10 , we will study the s-block elements of the periodic table. The s-block elements of the periodic table are those elements in which the last electron enters the outermost s-subshell (or s-orbital). Two electrons &#8230; <a title=\"Class 11 Chemistry NCERT Solutions for 2021 Chapter 10 The s-Block Elements\" class=\"read-more\" href=\"https:\/\/www.kopykitab.com\/blog\/ncert-solutions-for-class-11-chemistry-chapter-10\/\" aria-label=\"More on Class 11 Chemistry NCERT Solutions for 2021 Chapter 10 The s-Block Elements\">Read more<\/a><\/p>\n","protected":false},"author":249,"featured_media":109972,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":""},"categories":[2934,73713,73413,2985,73410],"tags":[3428,76512,76517],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts\/57208"}],"collection":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/users\/249"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/comments?post=57208"}],"version-history":[{"count":4,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts\/57208\/revisions"}],"predecessor-version":[{"id":121198,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/posts\/57208\/revisions\/121198"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/media\/109972"}],"wp:attachment":[{"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/media?parent=57208"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/categories?post=57208"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kopykitab.com\/blog\/wp-json\/wp\/v2\/tags?post=57208"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}