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Question: Compounds of alkaline earth metals are less soluble in water than the corresponding alkali metal sal...

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

A

Their high ionisation energy

B

Their low electronegativity

C

Their low hydration energy

D

Their high lattice energy

Answer

Their high lattice energy

Explanation

Solution

Along the period, atomic size decreases and nuclear charge increases and thus lattice energy increases,

lattice energy ∝\propto Charg⁡eoncationSizeofcation\frac{Ch\arg eoncation}{Sizeofcation}