Solubility of alkali metal floucides increase down the group. Select correct explanation for given statement "

Options

A. Hydration energy increases and lattice energy decreases down the group
B. Both energy decrease down the group but decrease in hydration energy is rapid
C. Both energy decrease down the group but decrese in lattice energy is rapid
D. Both energy increase down the group but increase in hydration energy is rapid.

Answer

3

Explanation

Although both hydration and lattice energies of alkali metal fluorides decreases down the group and hydration energy dominates over lattice energy ,therefore, solubility increases down the group.