The crystalline salts of alkaline earth metals contain more water of crystallisation than the corresponding alkali metal salts. Why ?

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.

Compounds of alkaline earth metals are less soluble in water than the corresponding alkali metal salts due to :

Alkali metals salts are

Alkaline earth metal salts are:

The alkaline earth metals have smaller size than those of corresponding alkali metals, this is due to