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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

Name an element from Group 2 which forms an amphoteric oxide and a water soluble sulphate.

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प्रश्न

Name an element from Group 2 which forms an amphoteric oxide and a water soluble sulphate.

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उत्तर

Due to small size and somewhat high ionization enthalpy of Be, Be(OH)2 is amphoteric in nature, i.e., it reacts with both acids and bases. Further, due to small size, the hydration enthalpy of Be2+ ions is much higher than the lattice enthalpy of BeSO4. As a result, BeSO4 is highly soluble in water.

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पाठ 10: The s-block Elements - Multiple Choice Questions (Type - I) [पृष्ठ १३०]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 11
पाठ 10 The s-block Elements
Multiple Choice Questions (Type - I) | Q 33 | पृष्ठ १३०

संबंधित प्रश्‍न

Discuss the general characteristics and gradation in properties of alkaline earth metals.


Which one of the alkaline earth metal carbonates is thermally the most stable?


Assertion: BeSO4 is soluble in water while BaSO4 is not

Reason: Hydration energy decreases down the group from Be to Ba and lattice energy remains almost constant.


Write a balanced chemical equation for the following chemical reaction.

Rubidium with oxygen gas


Discuss briefly the similarities between beryllium and aluminium.


Beryllium halides are covalent whereas magnesium halides are ionic why?


Alkaline earth metal (A), belongs to 3rd period reacts with oxygen and nitrogen to form compound (B) and (C) respectively. It undergoes metal displacement reaction with AgNO3 solution to form compound (D). Identify A, B, C and D.


Explain the important common features of Group 2 elements.


The reducing power of a metal depends on various factors. Suggest the factor which makes Li, the strongest reducing agent in aqueous solution.


Some of the Group 2 metal halides are covalent and soluble in organic solvents. Among the following metal halides, the one which is soluble in ethanol is ______.


Identify the correct formula of halides of alkaline earth metals from the following.

(i) BaCl2.2H2O

(ii) BaCl2.4H2O

(iii) CaCl2.6H2O

(iv) SrCl2.4H2O


Discuss the trend of the following:

Thermal stability of carbonates of Group 2 elements.


Why are BeSO4 and MgSO4 readily soluble in water while CaSO4, SrSO4 and BaSO4 are insoluble?


What is the structure of BeCl2 molecule in gaseous and solid state?


An element of group 2 forms covalent oxide which is amphoteric in nature and dissolves in water to give an amphoteric hydroxide. Identify the element and write chemical reactions of the hydroxide of the element with an alkali and an acid.


Alkaline earth metals show ______. 


Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is ______.


Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is ______.


PbCl4 exists but PbBr4 and Pbl4 do not because of ______.


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