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Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?
A. `BaSO_(4)`
B. `SrSO_(4)`
C. `CaSO_(4)`
D. `BeSO_(4)`

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Correct Answer - D
In case of `BeSO_(4)` the size of `Be^(2+)` ion is very samll. Therefore, the ion has the maximum tendency to get hydrated. AS a result, the hydration enthalpy of `BeSO_(4)` is more than its lattice enthalpy.

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