Question

The lattice energy of an ionic solid is a measure of the attraction between the oppositely charged ions. As ionic charge increases, the attraction between the ions _____ and so does the lattice energy. As the size of the ions increases, the attraction between the ions _____ and so does lattice energy. Lattice energy therefore _____ down a group of the periodic table and _____ across a period.

Multiple choice question.
A. increases; decreases; decreases; increases
B. decreases; decreases; increases; increases
C. decreases; increases; increases; decreases
D. increases; decreases; increases; decreases

Answer 1

The lattice energy increases with an increase in ionic charge but decreases as the size of the ions increases, thus, it decreases down a group and increases across a period.

Step-by-step explanation:

The lattice energy of an ionic solid is a measure of the attraction between the oppositely charged ions. As the ionic charge increases, the attraction between the ions increases and so does the lattice energy. As the size of the ions increases, the attraction between the ions decreases and so does the lattice energy. Lattice energy therefore decreases down a group of the periodic table as ion size increases, and increases across a period as ion size decreases and charge increases. The correct response from the multiple choice question is A: increases; decreases; decreases; increases.