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: 2.74f


$Cr(CH_3COO)_3$ or $Cr(CH_3CO_2)_3$

Work Step by Step

This is an ionic compound. The cation is chromium, with a charge of 3+ (due to the Roman numeral III). The anion is acetate, which can be written as either $CH_3COO$ or $CH_3CO_2$, with a charge of 1- regardless. To have an electrically neutral atom, there must be 3 acetate ions and 1 chromium ion, hence the $Cr(CH_3COO)_3$ or $Cr(CH_3CO_2)_3$.
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