Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0321908449
ISBN 13: 978-0-32190-844-5

Chapter 6 - Section 6.8 - Attractive Forces in Compounds - Understanding the Concepts - Page 204: 6.76c

Answer

Group 7A elements form ions, while Group 8A elements don't form ions.

Work Step by Step

Group 7A elements form ions in order to complete octet, that is why they form many compounds. On the other hand, octet of Group 8A elements is already complete, so they do not form ions.
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