7.30 Ionic bonding and LiCl Equation 1.50 can be used to represent the PE of the ion pair inside the LiCl crystal. LiCl has the NaCl structure with M = 1.748, m = 7.30, B = 2.34 10-89 J m Fur- ther, the ionization energy of Li (Li Li+ + e) is 520.2 kJ mol. The electron affinity of Cl (energy released in Cl + eCI) is 348.7 kJ mol (a) Calculate the equilibrium separation of ions in the LiCl crystal. (b) Calculate the bonding energy per ion pair in the LiCl crystal. (c) Calculate the atomic cohesive energy of the LiCl crystal. (c) Calculate the density of LiCl.