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 - Topical Questions - Page 240b,: 59

Answer

The answer is below.

Work Step by Step

An example is Boron. The fact that this element is in the 3rd group tells us that it has 3 valence electrons.
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