Lattice enthalpy of an ionic solid is defined as the energy required to completely separate one mole of solid ionic compound into the gaseous components.
Note :
Lattice enthalpy values of some ionic compounds :
| Compound |
Lattice enthalpy kJ mol-1 |
| LiCl |
853 |
| NaCl |
788 |
| BeF2 |
3020 |
| CaCl2 |
2258 |
| AlCl3 |
5492 |
