2.18 The net potential energy between two adjacentions, EN, may be represented by the sum ofEquations 2.9 and 2.11; that is,ENAВ+(2.17)rCalculate the bonding energy E, in terms of theparameters A, B, and n using the followingprocedure:1. Differentiate EN with respect to r, and then setthe resulting expression equal to zero, because thecurve of EN versus r is a minimum at Eŋ.2. Solve for r in terms of A, B, and n, which yieldsro, the equilibrium interionic spacing3. Determine the expression for E, by substitut-ing ro into Equation 2.17.

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Answered: 8 The net potential energy between two…

8 The net potential energy between two adjacent ions, EN, may be represented by the sum of Equations 2.9 and 2.11; that is,

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter3: Atomic Shells And Classical Models Of Chemical Bonding

Section: Chapter Questions

Problem 87AP: At large interatomic separations, an alkali halide molecule MX has a lower energy as two neutral...

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Question

2.18 The net potential energy between two adjacent
ions, EN, may be represented by the sum of
Equations 2.9 and 2.11; that is,
EN
A
В
+
(2.17)
r
Calculate the bonding energy E, 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 zero, because the
curve of EN versus r is a minimum at Eŋ.
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 substitut-
ing ro into Equation 2.17.

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