Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Textbook Question
Chapter 9, Problem 49E
Using the molecular orbital model, write electron configurations for the following diatomic species and calculate the bond orders. Which ones are paramagnetic?
a. Li2
b. C2
c. S2
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Determine the electron geometry, molecular geometry, and ide-
alized bond angles for each molecule. In which cases do you ex-
pect deviations from the idealized bond angle?
a. PF3
b. SB12
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d. CS2
This question is related to valence bond theory.
a. Explain the assumptions made in bonding models under valence bond theory. What best describes
bonding under these models?
b. Draw the Lewis structure of SO2. Identify bonds in the moldule as either sigma or pi bonds.
Draw orbital diagrams for ground state S and O atoms. Use these orbital diagrams determine the
geometry of SO2 using valence bond theory (hint: SO2 must be descried using hybrid atomic orbitals. In
other words, which orbitals on which atoms overlap to give rise to which bonds?
C.
d. Explain why valence bond theory does not adequately describe the bonding in SO2, even though it
accurately predicts the geometry/bond angle.
Determine the electron geometry, molecular geometry, and idealized bond angles for each molecule. In which cases do you expect deviations from the idealized bond angle?a. PF3 b. SBr2 c. CHCl3 d. CS2
Chapter 9 Solutions
Chemistry
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