Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

Options

A. `CaSO_(4)`
B. `BeSO_(4)`
C. `BaSO_(4)`
D. `SrSO_(4)`

Answer

B

Explanation

Down the group, solubility of sulphates of group 2 metals in water decreases. `BeSO_(4)` is soluble in water (a known fact). Hence, hydration energy of `BeSO_(4)` is more in magnitude than its lattice energy.