Question

The lattice energy for ionic crystals increases as the charge on the ions _____________ and the size of the ions __________________.

Answer 1

Explanation:

The energy necessary to break bond between particles of an ionic solid and convert its atoms into gaseous ions is known as lattice energy.

Smaller is the size of an atom more heat energy it needs to break the bonds within its atoms. Whereas larger is the size of atom less energy it needs to break the bonds.

Also, higher is the charge on an atom means smaller is the size of atom. Thus, as charge increases there will be increase in lattice energy.

Therefore, we can conclude that the lattice energy for ionic crystals increases as the charge on the ions  increases and the size of the ions decreases.

Answer 2

Increases, decreases