Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 9 - Molecular Geometry and Bonding Theories - Exercises - Page 388: 9.3b


Trigonal bi-pyramidal is the only electron domain geometry consistent with the shape shown.

Work Step by Step

The molecule in b has a T-shaped molecular geometry, which is suggested by the fact that there are three bonded atoms with bond angles of 90 degrees. Because the molecule is T-shaped, we can conclude that the molecule must have 2 lone pairs. There are 3 bonded atoms and 2 loan pairs, so there is a trigonal bi-pyramidal electron domain geometry.
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