Question

The oxidation number of iron in $F{e}_3{O}_4$ is

• A. $+2$
• B. $+3$
• C. $\frac{8}{3}$
• D. $\frac{2}{3}$

Answer 1

Answer: (C)

In $F{e}_3{O}_4$, let oxidation number of $Fe=x$
$3x+4(-2)=0$ or $x=\frac{8}{3}$