What is the oxidation state of central metal ion in $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}$ complex?
What is the oxidation state of central metal ion in $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}$ complex?
+2
-6
-4
+3
Solution
$\begin{aligned}
& \mathrm{In}\left[\mathrm{Fe}(\mathrm{CN})_6\right]^4 \\
& \mathrm{x}-6=-4 \\
& \mathrm{x}=6-4=+2
\end{aligned}$
$\therefore \quad$ Oxidation number of Fe is +2 .