Lattice energy is .
A) the energy required to produce one mole of an ionic compound from its constituent elements in their standard states
B) the energy required to convert a mole of ionic solid into its constituent ions in the gas phase
C) the sum of electron affinities of the components in an ionic solid
D) the energy given off when gaseous ions combine to form one mole of an ionic solid
E) the sum of ionization energies of the components in an ionic solid

Question

Quizplus · Accepted Answer

Lattice energy is defined as the energy required to separate one mole of an ionic solid into its constituent ions in the gas phase. This is because the attraction between oppositely charged ions in an ionic solid creates a strong lattice structure, and energy is required to break these bonds and separate the ions. Option A describes the formation energy of an ionic compound, option C describes the electron affinity of the components in an ionic solid, option D describes the heat of formation of an ionic solid, and option E describes the ionization energies of the components in an ionic solid, none of which accurately describe lattice energy.

Lattice Energy Is