Question

The oxidation number of Fe in $K_3\left[Fe\right(CN{)}_6]$ is

• A. 2
• B. 3
• C. 4
• D. 6

Answer 1

The correct option is B 3

$K_3^{+3}\left[F{e}^x\right(CN{)}_6^{-6}]+3+x-6=0x=+3$