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Question

Which pair is not the correct order of Lattice Energy?

A
KCl>MgO
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B
AlN>MgO
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C
CaO>BaO
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D
MgCO3>CaCO3
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Solution

The correct option is A KCl>MgO
Generally, smaller the size of the cation and more charge on either of the ions increase the lattice energy.
Hence, MgO lattice energy is more than KCl.

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