Which of the following sulphates has the high | vedclass

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(D) The solubility of alkaline earth metal sulphates decreases down the group from $Be$ to $Ba$.This is because the hydration energy decreases more ra

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$BeSO_4$

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(D) The solubility of alkaline earth metal sulphates decreases down the group from $Be$ to $Ba$.This is because the hydration energy decreases more rapidly than the lattice energy as the size of the cation increases.Since $Be^{2+}$ is the smallest ion,it has the highest hydration energy,which compensates for its lattice energy,making $BeSO_4$ the most soluble.The order of solubility is: $BeSO_4 > MgSO_4 > CaSO_4 > SrSO_4 > BaSO_4$.

Which of the following sulphates has the highest solubility in water?

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