Transcript Chapter 10 - Assigning Oxidation Numbers

Assigning
Oxidation Numbers
Steps: Assigning Oxidation Numbers
1. Check for any ions that have only one
possible oxidation number.
2. The element closest to F will be negative.
3. If you have two or more elements that are
still unknown look for polyatomic ions.
What are the oxidation numbers
of all the atoms in each of the
following substances?
K
0
K
CaI2
2+
Ca
I
Na2CO3
+
Na
4+
C
2O
Mg(NO3)2
2+
Mg
5+
N
2O
I2
0
I
Na2Cr2O7
+
Na
6+
Cr
2O
FeSO4
2+
Fe
6+
S
2O
MoO3
4+
Mo
2-
2O
Ga(ClO3)2
2+
Ga
5+
Cl
2O
S8
0
S
(NH4)3PO4
3N
+
H
5+
P
2O
W2(HPO4)5
5+
W
+
H
5+
P
2O