Question

enthalpy of formation of NaCl is - c J then what will be the lattice energy of NaCl solid​

Answer 1

I DONT KNOW CORRECTLY

Answer 2

For NaCl, the lattice dissociation enthalpy is +787 kJ mol-1. You should talk about "lattice formation enthalpy" if you want to talk about the amount of energy released when a lattice is formed from its scattered gaseous ions. For NaCl, the lattice formation enthalpy is -787 kJ mol-1