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 23 - Problems: 23.27

Answer

See explanation below.

Work Step by Step

The outermost electron is in f orbital, which is very close to the nucleus.This makes all of the lanthanides very similar from the outside.The lanthanides leads to their remarkably similar chemical properties.
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