Copyright © 2008 Pearson Prentice Hall, Inc.
Chapter 4/
37
Oxidation-Reduction (Redox)
Reactions
H
Cl
+1
-1
c)
Halogens
usually
have an oxidation number of -1.
3.
Cl
Cl
O
+1
+1
-2
A major exception is when the halogen is bonded to oxygen.