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Reducing Nature of Alkali Metals

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ntLattice enthalpies of alkaline earth metals are more than those of alkali metals. Then why alkali metal carbonates are more stable to heat than alkaline earth metal carbonates ?n

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Q. Assertion :Alkaline earth metals have lower densities than alkali metals. Reason: Atomic radii of alkaline earth metals are larger than that of corresponding alkali metals.

Q. Assertion :The crystalline salts of alkaline earth metals contain more water of crystallization than the corresponding alkali metal salts. Reason: The size of alkaline earth metal ions is lower than the size of alkali metal ions. The lower the size of the cation, the higher is the hydration energy. So the salts of alkaline earth metals have more water molecules of crystallization than those of alkali metals.

Q. The first ionisation enthalpies of the alkaline earth metals are higher than that of alkali metals but second ionisation enthalpies are smaller, why?

Q. Compare the solubility and thermal stability of alkali metals carbonates with those of the alkaline earth metals nitrates.

Carbonates of alkali and alkaline earth metals differ in:

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Reducing Nature of Alkali Metals

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