Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 10 - Problems: 10.28

Answer

They are the same when the central atom lacks lone pair electrons.

Work Step by Step

Electron-group arrangement is determined by lone pairs on the central atom and the number of atoms bonded to the central atom. Molecular shape is determined only by the number of atoms bonded to the central atom So if there are no lone pairs on the central atom, electron-group arrangement and molecular shape are identical.
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