1.

The correct order of hydration enthalpies of alkali metal ions is:(A) Li⁺ > Na⁺ > K⁺ > Cs⁺ > Rb⁺ (B) Na⁺ > Li⁺ > K⁺ > Rb⁺ > Cs⁺ (C) Na⁺ > Li⁺ > K⁺ > Cs⁺ > Rb⁺ (D) Li⁺ > Na⁺ > K⁺ > Rb⁺ > Cs⁺

Answer»

Answer:

option A)

Explanation:

ANSWER

Solution:- (A) Li⁺ > Na⁺ > K⁺ > Cs⁺ > Rb⁺

Hydration enthalpy depends upon IONIC POTENTIAL (charge/ SIZE). As ionic potential increases hydration enthalpy increases.

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