Question

The solubility of alkaline earth metal sulphates in water decrease in the order $BeSO_4$ >$$ MgSO_4> CaSO_4> SrSO_4 > BaSO_4. This is because
(A) Hydration energy increases down the group
(B) The rate of decrease of hydration energy is higher than the rate of decrease of lattice energy
(C) Lattice energy increases down the group
(D) Hydration energy of Be and Mg are very high
(E) Covalency is increasing down the group
Choose the correct answer from the options given below:

• A. (A) and (C) only
• B. (B) only
• C. (B) and (D) only
• D. (E) only

Answer 1

Answer: (C)

(B) and (D) only

Answer 2

The correct answer is (C) :(B) and (D) only