A) \[BeS{{O}_{4}}\]
B) \[CaS{{O}_{4}}\]
C) \[SrS{{O}_{4}}\]
D) \[BaS{{O}_{4}}\]
Correct Answer: A
Solution :
The solubility of alkaline earth metal sulphates decreases down the group because ionic size increases. \[\text{BeS}{{\text{O}}_{\text{4}}}\]is readily soluble in water, because the greater hydration enthalpy of \[\text{B}{{\text{e}}^{\text{2+}}}\] ion overcomers the lattice enthalpy factor.
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