Question

$\left[Fe\right(CN{)}_6{]}^{3-}$ is more stable than $\left[Fe\right(CN{)}_6{]}^{4-}$.

• A. True
• B. False

Answer 1

The correct option is A True

The oxidation state of central Fe atom in $\left[Fe\right(CN{)}_6{]}^{3-}$ and $\left[Fe\right(CN{)}_6{]}^{4-}$ is +3 and +2 respectively.
Higher is the oxidation state of the central metal atom in the complex, higher is the stability.
Hence, $\left[Fe\right(CN{)}_6{]}^{3-}$ is more stable than $\left[Fe\right(CN{)}_6{]}^{4-}$