What is the oxidation number of Iron (Fe) in each of the questions below?

Question

Column A

1. The oxidation number of Fe in the compound Fe2O4 is

2. The oxidation number of Iron (Fe) as a free element is

3. The oxidation number of Fe in the compound FeCl3 is

Column B

a. +4

b. +1

C. -1

d. 0

e. +3

f. -3

g. -2

h. +2

i. -4

Answer 1

1. The oxidation number of Fe in the compound Fe2O4 is +4 (choice a).

2. The oxidation number of Iron (Fe) as a free element is 0 (choice d).

3. The oxidation number of Fe in the compound FeCl3 is +3 (choice e).