Which of the following ionic compounds has the largest lattice energy (i.e. ,the lattice energy most favorable to a stable lattice)?
A)BaO
B)BeO
C)CsI
D)NaBr
E)BaS

Question

Quizplus · Accepted Answer

BeO has the largest lattice energy because lattice energy increases with the charge of the ions and decreases with the size of the ions. BeO has ions with a +2 and -2 charge, which is higher than the charges in the other options, and Be and O are relatively small ions, leading to a strong electrostatic attraction and thus a high lattice energy.

Which of the Following Ionic Compounds Has the Largest Lattice