Chemistry and Chemical Reactivity (9th Edition)

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

Chapter 9 Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals - 9-3 Molecular Orbital Theory - Review & Check for Section 9-3 - Page 365: 2



Work Step by Step

$O_2^-$ has 13 valence electrons: $[core]\ (\sigma_{2s})^2\ (\sigma_{2s}^*)^2\ (\sigma_{2p})^2\ (\sigma_{2p}^*)^2\ (\pi_{2p})^4\ (\pi_{2p}^*)^1$ HOMO: highest occupied molecular orbital, that's $\pi_{2p}^*$
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