The order of melting points of chlorides of alkali metals

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The order of melting points of chlorides of alkali metals

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LiCl > NaCl > KCl > CsCl

NaCl > KCl > CsCl > LiCl

LiCl > NaCl > CsCl > KCl

NaCl > CsCl > LiCl > KCl

answer is C.

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Detailed Solution

In general greater the L.E greater will be the melting point,
Thus the expected mpt is LiCl > NaCl > KCl > RbCl > CsCl but due to predominent covalent charater in LiCl its MPt is lenser than expected.
NaCl > KCl > RbCl > CsCl > LiCl

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