Chemistry: Molecular Approach (4th Edition)

Published by Pearson
ISBN 10: 0134112830
ISBN 13: 978-0-13411-283-1

Chapter 25 - Exercises - Page 1153: 1


The ns orbital electrons are lost first.

Work Step by Step

When a transition metal forms an ion, it loses electrons first from the ns orbital before losing electrons from the \[\left( n-1 \right)\text{d}\] orbital. For example, Fe has an electron configuration of\[[Ar]3{{d}^{6}}4{{s}^{2}}\] and during the formation of Fe2+ it loses both the 4s electrons.
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