Answer
Oxidation state of Si is +4.
Work Step by Step
$SiO_{2}$ is neutral, and oxygen ion is -2 in charge. To balance the charges, Si has an oxidation state of +4
Chemistry: A Molecular Approach (3rd Edition)
by Tro, Nivaldo J.
Published by
Prentice Hall
ISBN 10:
0321809246
ISBN 13:
978-0-32180-924-7
Chapter 22 - Sections 22.1-22.9 - Exercises - Problems by Topic - Page 1069: 17a
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