Calculate the lattice energy for the formation of solid NaCl if the following information is given..

Calculate the lattice energy for the formation of solid NaCl if the following information is given. What does the calculated lattice energy tell you about the material? (i) 109 kJ is required to convert solid Na to gaseous Na (ii) 121 kJ is required to convert gaseous Cl2 to two monatomic Cl atoms (iii) 496 kJ is required to remove the 3s1 electron of Na (form Na+ cation) (iv) _570 kJ of energy (energy is released) to add an electron to the Cl (v) _610 kJ of energy to form gaseous NaCl (heat of formation of NaCl)