Assign oxidation number for each of the following
a: KMnO4
b: (NH4)2HPO4
c: P4O6
a:
K has an oxidation number of +1
Mn has an oxidation number of +7
O has an oxidation number of -2
b:
N has an oxidation number of -3
H has an oxidation number of +1
P has an oxidation number of +5
O has an oxidation number of -2
c:
P has an oxidation number of +3
O has an oxidation number of -2