Identify the compound with the lowest magnitude of lattice energy.
A) KCl
B) KBr
C) Mg S
D) Ba S

Question

Quizplus · Accepted Answer

Lattice energy decreases as the size of the ions increases. Since Br- is larger than Cl-, KBr will have a lower lattice energy than KCl. MgS and BaS both have smaller cations and larger anions compared to KBr, so their lattice energies will be even higher. Therefore, KBr has the lowest magnitude of lattice energy out of the options given.

Identify the Compound with the Lowest Magnitude of Lattice Energy