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Reactivity with Halogens and Hydrogen (Group 2)

The alkali me...

Question

The alkali metal halide are soluble in water but LiF is insoluble because

A

It's amphoteric

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B

Li-F highly ionic

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C

It's lattice energy is high

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D

L i^{+}

ion is least hydrated.

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Solution

The correct option is C It's lattice energy is high
Small atomic size of $L i$ and $F$ make lattice energy highest among alkali metal halide and makes LiF insoluble in water.

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