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  4. The incorrect order of lattice energy is

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Q. The incorrect order of lattice energy is

NTA AbhyasNTA Abhyas 2020Chemical Bonding and Molecular Structure

Solution:

The incorrect order of lattice energy is $NaCl > LiF$ as lattice energy of LiF is more than NaF
$LE \propto \frac{q^{+} . q^{-}}{r^{+} + r^{-}}$
A. $AlF_{3}>MgF_{2}$ [Charge on cation]
B. $Li_{3}N>Li_{2}O$ [Charge on anion]
C. $NaCl < LiF$ [Size of cation and anion]
D. TiC > ScN [Charges on cation and anion].