The incorrect order of lattice energy is : — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Step 1: Lattice energy increases with increasing ionic charges and decreasing ionic sizes. Step 2: Compare LiF and NaCl: both pairs have charges of +1 and -1, but Li^+ is much smaller than Na^+ and F^- is much smaller than Cl^-. This smaller interionic distance gives LiF a higher lattice energy than NaCl. Step 3: Thus, the order NaCl > LiF is incorrect, corresponding to option (c).