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 °ø 10−89 J m7.30. Further,
the ionization energy of Li (Li → Li+ + e−) is 520.2 kJ mol−1. The electron affinity of Cl (energy
released in Cl + e− → Cl−) is 348.7 kJ mol−1 (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.