Assertion : Solubilities of alkali metal fluorides and carbonates increase down the group.
Reason : Hydration energies of alkali metal halides decrease down the group with increase in size of cations.

Options

A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1
C. Statement-1 is True, Statement-2 is False.
D. Statement-1 is False, Statement-2 is True.

Answer

B

Explanation

Both statements are correct but `S_2` is not correct explanation of `S_1`
Statement-1 : The reason for this is that their lattice energies change is more than the hydration energies on descending the group.
Statement-2: Hydration energy `prop 1/("size of cation")`