Arrange the following compounds in decreasing order of their lattice energy: . — Chemical Bonding Chemistry Question
Question
Arrange the following compounds in decreasing order of their lattice energy: $NaF, NaCl, NaBr, NaI$.
Answer: B
💡 Solution & Explanation
Lattice Energy is inversely proportional to the sum of the ionic radii ($r^+ + r^-$). Since the size of the halide ion increases from $F^-$ to $I^-$, the lattice energy decreases in the order $NaF > NaCl > NaBr > NaI$.
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