Answer
See explanation below.
Work Step by Step
Gadolinium, Gd a lanthanide element has electronic configuration as[Xe]6s2 4f7 5d1.This shows that it has 8 unpaired electrons.But the ion Gd3+ electronic configuration is [Xe] 4f7.
Chemistry: The Molecular Nature of Matter and Change 7th Edition
by Silberberg, Martin; Amateis, Patricia
Published by
McGraw-Hill Education
ISBN 10:
007351117X
ISBN 13:
978-0-07351-117-7
Chapter 23 - Problems - Page 1047: 23.34
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