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Elevation in Boiling Point

Melting point...

Question

Melting point of calcium halides decreases in the order-

CaF₂ > CaCl₂ > CaBr₂ > CaI₂

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CaI₂ > CaBr₂ > CaCl₂ > CaF₂

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CaBr₂ > CaI₂> CaF₂ > CaCl₂

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CaCl₂ > CaBr₂ > CaI₂ > CaF₂

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Solution

The correct option is A
CaF₂ > CaCl₂ > CaBr₂ > CaI₂

As the size of the anion increases, the covalent character increases and hence the melting points decrease.

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