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: 2.73a

Answer

$Al(OH)_3$

Work Step by Step

In order to find the chemical formula of Aluminum hydroxide, first look at their charges. Aluminum is a metal which has a charge of 3+. Hydroxide $(OH-)$, on the other hand, has a charge of 1-. In order to create a balanced charge, there must be 3 hydroxide molecules for every one Aluminum atom, which has a charge of 3+. Therefore, the chemical formula must be $Al(OH)_3$.
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