Question

In which of the following compounds iron has the lowest oxidation state?

• A. $Fe(CO{)}_5$
• B. $F{e}_{2}O$
• C. $K_4\left[Fe\right(CN{)}_6]$
• D. $FeS{O}_4.\left(N{H}_4\right)S{O}_4.6H_{2}O$

Answer 1

The correct option is A $Fe(CO{)}_5$

In $Fe(CO{)}_5$ : Fe shows $0$ oxidation state
In $F{e}_{2}O$ : Fe shows $+1$ oxidation state
In $K_4\left[Fe\right(CN{)}_6]$ : Fe shows $+2$ oxidation state
In $FeS{O}_4\left(N{H}_4\right)S{O}_4.6H_{2}O$ : Fe shows $+2$ oxidation state