Question

Assertion: The lesser the lattice enthalpy more stable is the ionic compound. Reason: The lattice enthalpy is greater, for ions of highest charge and smaller radii

For NaCl: ΔsubH(Na) = 108, ΔiH(Na) = 496, ½ΔdissH(Cl2) = 121, ΔegH(Cl) = −349 and ΔfH(NaCl) = −411 (all in kJ mol−1). The lattice enthalpy of NaCl is