S Block Elements Question 142

Question: Which one is the correct statement with reference to solubility of $ MgSO_4 $ in water-

Options:

A) $ SO_4^{2-} $ ion mainly contributes towards hydration energy.

B) Sizes of $ M{{g}^{2+}} $ and $ SO_4^{2-} $ are similar.

C) Hydration energy of $ MgSO_4 $ is higher in comparison to its lattice energy.

D) Ionic potential (charge/radius ratio) of $ M{{g}^{2+}} $ is very low.

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Answer:

Correct Answer: C

Solution:

[c] $ MgSO_4 $ is the only alkaline earth metal sulphate which is soluble in water and for solubility hydration energy should be greater than lattice energy.