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Cationic Radius

Which of the ...

Question

Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?

A

C a S O_{4}

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B

B e S O_{4}

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C

B a S O_{4}

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D

S r S O_{4}

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Solution

The correct option is B $B e S O_{4}$
$B e^{+ 2}$ is very small, hence its hydration enthalpy is greater than its lattice Enthalpy

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b. Hydration enthalpy
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B e F_{2}

is soluble in water while fluorides of other alkaline earth metals are insoluble because of:

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