Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 2 Atoms, Molecules, and Ions - Study Questions - Page 95c: 45


$CoO$ $Co_2O_3$

Work Step by Step

The oxide ion is $O^{2-}$. For $Co^{2+}$: Both have the same charge, so $CoO$ For $Co^{3+}$: To balance the charges we need 3 $O^{2-}$ and 2 $Co^{3+}$: $Co_2O_3$
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