Definitions for "Lattice energy"
Keywords:  ionic, ions, infinite, gaseous, nacl
The energy given off when oppositely charged ions in the gas phase come together to form a solid. For example, the energy given off in the following reaction: Na+(g) + Cl-(g) NaCl(s).
Lattice energy is the energy per ion pair required to separate completely the ions in a crystal lattice at a temperature of absolute zero.
the energy change occurring when separated gaseous ions are packed together to form an ionic solid