Question

The structure of potassium ferrocyanide is:

• A. tetrahedral
• B. octahedral
• C. square planar
• D. linear

Answer 1

Answer: (B)

octahedral

Potassium ferricyanide is the chemical compound with the formula $K_4\left[Fe\right(CN{)}_6]$.

Like other metal cyanides, solid potassium ferricyanide has a complicated polymeric structure.

The polymer consists of octahedral $\left[Fe\right(CN{)}_6{]}^{4-}$ centres crosslinked with $K^{+}$ ions that are bound to the $CN$ ligands.

Hence, option $D$ is correct.