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Question
Based on lattice energy and other considerations which one of the following alkali metal chlorides is expected to have the highest melting point
Based on lattice energy and other considerations which one of the following alkali metal chlorides is expected to have the highest melting point
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Solution
The correct option is B NaCl
Melting point decreases on going down the group because lattice enthalpy decreases with increase in size of the alkali metal . But due to covalent character of LiCl, its melting point is minimum and hence NaCl has highest melting point.
Melting point decreases on going down the group because lattice enthalpy decreases with increase in size of the alkali metal . But due to covalent character of LiCl, its melting point is minimum and hence NaCl has highest melting point.
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