Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 7 The Structure of Atoms and Periodic Trends - 7-3 Electron Configurations of Atoms - Review & Check for Section 7-3: 2

Answer

A

Work Step by Step

Cr: $[Ar]\ 3d^5\ 4s^1$, 6 unpaired Fe: $[Ar]\ 3d^6\ 4s^2$, 4 unpaired Mn: $[Ar]\ 3d^5\ 4s^2$, 5 unpaired Ni: $[Ar]\ 3d^8\ 4s^2$, 2 unpaired
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