Question

# Lattice energy of an ionic compound depends upon:(A) Charge on the ions only(B) Size of the ions only(C) Packing of the ions only(D) Charge and size of the ions

> In the gas phase, it is defined as the heat of formation for opposite charge ions to be combined into an ionic solid. As an example , sodium chloride's lattice energy, NaCl, is the energy released when gaseous $N{a^ + }$ and $C{l^ - }$ ions join together to form a lattice of alternating ions in the NaCl crystal.