s-Block ElementsHard

Question

BeF2 is soluble in water, whereas, the fluorides of other alkaline earth metals are insoluble because of :

Options

A.ionic nature of BeF2
B.greater hydration energy of Be2+ ion as compared to lattice energy
C.covalent nature of BeF2
D.none of these

Solution

Fluorides of alkaline earth metals except BeF2 are insoluble in water. The solubility of BeF2 in  water is due to higher hydration energy on account of small size of Be2+ ion and F- ion and high charge density of Be2+ ion.

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