Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 5 - Electron Configurations and the Periodic Table - Questions for Review and Thought - Applying Concepts - Page 240f: 121d


The answer is below.

Work Step by Step

The Bromine electron would be coming from the 4p shell, while the Chlorine electron comes from the 3p shell. Since electrons further from the nucleus are easier to remove as a result of Coulomb's law, we see that Bromine has a lower first ionization energy.
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