Question

The oxidation number of iron in $Fe_3O_4$ is

• A. 2
• B. 3
• C. 44776
• D. 44595

Answer 1

Answer: (C)

44776

Answer 2

In $Fe_3O_4\,let\,O.N. of Fe=x$ $3x+4(-2)=0\,or\,x=8/3$