Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 2 - Atoms, Molecules, and Ions - Exercises - Page 77: 2.73c



Work Step by Step

Look at the charges of each ion in copper (I) oxide in order to determine the chemical formula. While metals can have a variety of different charges, the "(I)" tells us that Copper has a charge of 1+. On the periodic table, oxygen is located two groups to the left of the noble gases, meaning that it has a charge of -2. Since the magnitude of the oxygen's charge is twice as great as that of Copper(I), there must be two copper atoms for every one oxygen atom. Thus, the chemical formula for Copper (I) Oxide is $Cu_2O$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.