Chemistry and Chemical Reactivity (9th Edition)

by Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A.

Published by Cengage Learning

ISBN 10: 1133949649

ISBN 13: 978-1-13394-964-0

Chapter 21 The Chemistry of the Main Group Elements - 21-8 Nitrogen, Phosphorus, and the Group 5A Elements - Review & Check for Section 21-8 - Page 842: 3

Answer

C. +3

Work Step by Step

Phosphorous acid or phosphonic acid ($H_3PO_3$) is a dibasic acid with phosphorus in +3 oxidation state.

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