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प्रश्न
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
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उत्तर
(i) BaCl2.2H2O
(iii) CaCl2.6H2O
Explanation:
Tendency to form halide hydrates gradually decreases down the group. The hydrates are MgCl2.6H2O, CaCl2.6H2O, SrCl2.6H2O and BaCl2.2H2O.
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संबंधित प्रश्न
Which one of the alkaline earth metal carbonates is thermally the most stable?
The product obtained as a result of a reaction of nitrogen with CaC2 is ______.
Which of the following has the highest hydration energy
Assertion: Generally alkali and alkaline earth metals form superoxides.
Reason: There is a single bond between O and O in superoxides.
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.
In context with beryllium, which one of the following statements is incorrect?
Beryllium halides are covalent whereas magnesium halides are ionic why?
The reducing power of a metal depends on various factors. Suggest the factor which makes Li, the strongest reducing agent in aqueous solution.
Name an element from Group 2 which forms an amphoteric oxide and a water soluble sulphate.
Discuss the trend of the following:
Thermal stability of carbonates of Group 2 elements.
Discuss the trend of the following:
The solubility and the nature of oxides of Group 2 elements.
Why are BeSO4 and MgSO4 readily soluble in water while CaSO4, SrSO4 and BaSO4 are insoluble?
Assertion (A): Beryllium carbonate is kept in the atmosphere of carbon dioxide.
Reason (R): Beryllium carbonate is unstable and decomposes to give beryllium oxide and carbon dioxide.
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.
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 ______.
