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 8 - Problems - Page 354: 8.16


Hund’s rule states that electrons will occupy empty orbitals in a given sub-level (with parallel spins) before filling half-filled orbitals. The lowest energy arrangement has the maximum number of unpaired electrons with parallel spins.

Work Step by Step

This means the lower energy arrangement will be attained by occupation of one electrons in each orbitals followed by pairing of electrons in the orbitals.
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