9.8 Exercise 10

Potassium fluoride (KF) is a molecule formed by an ionic bond. At equilibrium separation the atoms are $r_{0} = 0.255 \text{nm}$ apart. Determine the electrostatic potential energy of the atoms. The electron affinity of F is 3.40 eV and the ionization energy of K is 4.34 eV. Determine dissociation energy. (Neglect the energy of repulsion.)