Consider an ionic compound, MX, composed of generic metal M and generic, gaseous halogen X.
• The enthalpy of formation of MX is AH = -467 kJ/mol.
• The enthalpy of sublimation of Mis AH sub = 135 kJ/mol.
• The ionization energy of Mis IE = 411 kJ/mol.
• The electron affinity of X is AHEA = -339 kJ/mol. (Refer to the hint).
• The bond energy of X, is BE = 241 kJ/mol.
Determine the lattice energy of MX.
AHLattice =
457.5
kJ/mol