Chemistry: The Molecular Science (5th Edition)

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

Chapter 2 - Chemical Compounds - Questions for Review and Thought - Applying Concepts - Page 90g: 128b

Answer

Copper (II) Oxide

Work Step by Step

Copper has different oxidation states, meaning that it will not always gain a certain charge (such as +1). Therefore, we include a II in parentheses to show that it gains a charge of 2+ through bonding with Oxygen.
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