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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff4dfc165-1571-419f-99fc-a4587d76c340%2Ff4a81f87-0e7f-45a7-b3f4-e2990efe2aec%2F6c5dsms_processed.png&w=3840&q=75)
Transcribed Image Text: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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