Arrange the following alkali metal halides in decreasing order of their lattice energies: . — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Lattice Energy is inversely proportional to the sum of the ionic radii ($r^+ + r^-$). Because the size of the halide ion increases from $F^-$ to $I^-$, the lattice energy decreases as $NaF > NaCl > NaBr > NaI$.