Answer
A
Work Step by Step
Only $PH_{4}^{+}$ has no lone electron pairs, hence its electron-region geometry is the same as the molecular geometry.
Chemistry: The Molecular Science (5th Edition)
by Moore, John W.; Stanitski, Conrad L.
Published by
Cengage Learning
ISBN 10:
1285199049
ISBN 13:
978-1-28519-904-7
Chapter 7 - Molecular Structures - Questions for Review and Thought - General Questions - Page 325e: 80a
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