Question

The oxidation state of iron is zero in which of the following compound?

• A. $FeS{O}_4$
• B. $Fe{(CO)}_4$
• C. ${[Fe{(CN)}_6]}^{4-}$
• D. $FeC{l}_3$

Answer 1

Answer: (B)

The oxidation number of iron is zero in $Fe{(CO)}_4$ . Let the oxidation number of iron is $x.$ $x+4\times 0=0$ $x=0$