Q.
The order of melting points of chlorides of alkali metals
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a
LiCl > NaCl > KCl > CsCl
b
LiCl > NaCl > CsCl > KCl
c
NaCl > KCl > CsCl > LiCl
d
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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