Consider a hypothetical x^+ middot Y^- ion pair for which the equilibrium interionic spacing and bonding energy values are 0.35 nm and -6.13 eV, respectively. If it is known that n in E_N = -A/r + B/r^n has a value of 10, using r_0 = (A/nB)^1/(1 - n) and E_0 = - A/(A/nB)^1/(1 - n) + B/(A/nB)^n/(1 - n), determine explicit expressions for attractive and repulsive energies E_A and E_R of E_A = -A/r and E_R = B/r^n. The answers to Problem 2.18 were expressions for the equilibrium separation r_0 and the bonding energy, E_0, which are as follows: r_0 = (A/nB)^1/(1 - n) E_0 = - A/(A/nB)^1/(1 - n) + B/(A/nB)^n/(1 - n) If n has a value of 10, determine the following: (a) The value of A in eV-nm (b) The value of B in ev-nm^10