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Does the degree of hydration depend upon the size of the cation?

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in Chemistry – Class 11 by (148k points)
Does the degree of hydration depend upon the size of the cation?

(a) Yes

(b) No

(c) Maybe

(d) Cannot say

I had been asked this question in semester exam.

The origin of the question is s-Block Elements topic in division s-Block Elements of Chemistry – Class 11

1 Answer

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Best answer
Correct answer is (a) Yes

Explanation: The degree of hydration depends upon the size of the cation, smaller the size of the cation, greater is its hydration enthalpy. The relative degree of hydration in an increasing order is Li^+ > Na^+ > K^+ > Rb^+ > Cs^+.

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