Q3: The net potential energy between two adjacent ions, EN ,may be represented by the sum of Equations 2.8 and 2.9; that is, EN= -A/r + B/r" (2.11) Calculate the bonding energy Eo in terms of the parameters A, B, and n using the following procedure: 1. Differentiate En with respect to r, and then set the resulting expression equal to an zero, since the curve of EN versus r is a minimum at Eo. 2. Solve for r in terms of A, B, and n, which yields ro, the equilibrium interionic spacing. 3. Determine the expression for E, by substitution roof into Equation 2.11.

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