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: 2.69e


Cation Name: Chromium (II) Cation Charge: 3+ Anion Name: Hydroxide Anion Charge: 1-

Work Step by Step

Since Chromium has more than one ionic charge, we will start with the anion. The anion is the Hydroxide ion OH$^{-}$. It has a 1- charge. But since there are three Hydroxide ions in the compound, there is 3- charge from the negatively charged ions. In order for the compound to have a net neutral charge, the chromium atom must have a 3+ charge, making it Chromium (III).
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.