Assertion : The crystalline salts of alkaline earth metals contain more water of crystallisation than the correcponding alkali metal salts.
Reason : Alkaline earth metals have smaller size and more nuclear charge.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer

a

Explanation

Smaller cation and higher charge attracts more numbers of water molecules. Thus, there is high degre of hydration in case of alkaline earth metal salts.