Which of the following has the lowest lattice energy?
A) KCl
B) LiCl
C) KBr
D) NaCl
E) KI

Question

Quizplus · Accepted Answer

The lattice energy is inversely proportional to the size of the ions involved; larger ions lead to lower lattice energies. Among the given options, KI has the lowest lattice energy because both potassium and iodide ions are larger than the respective ions of other options. Therefore, the electrostatic forces of attraction between the ions in KI crystal are weaker compared to other options.

Which of the Following Has the Lowest Lattice Energy