A) \[MgS{{O}_{4}}.\,x\,{{H}_{2}}O\]
B) \[CaS{{O}_{4}}.\,x\,{{H}_{2}}O\]
C) \[BaS{{O}_{4}}.\,x\,{{H}_{2}}O\]
D) All have the same value of \[x\]
Correct Answer: A
Solution :
As the size of metal atom increases, degree of hydration decreases. Thus,\[\text{M}{{\text{g}}^{\text{2+}}}\]ion gets more hydrated. Hence, \[x\]is maximum for\[\text{MgS}{{\text{O}}_{\text{4}}}\text{.}\,\text{x}\,{{\text{H}}_{\text{2}}}\text{O}\text{.}\]
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