Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 23 - Sections 23.1-23.5 - Exercises - Cumulative Problems - Page 1096: 67

Answer

The nuclear charge of the last three is relatively high due to the lanthanide series, where the 4f subshell falls between them and the other six metals of the group.

Work Step by Step

The nuclear charge of the last three is relatively high due to the lanthanide series, where the 4f subshell falls between them and the other six metals of the group.
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