Given sublimation and ionization energy of Na are 108 kJ/mol and 496 kJ/mol respectively and bond dissociation energy required to make one mole chlorine atoms and its electron affinity energy are 122 kJ/mol and -349 kJ/mol.If â–³H0f of NaCl(s) is -411 kJ/mol.What is its approximate lattice formation enthalpy?