Chemistry - Coordination Chemistry Question with Solution | TestHub

Ferrocene = Fe(C₅H₅)₂, so Fe is in the +2 oxidation state and the ligand is C₅H₅⁻.

Potassium ferrocyanide = K₄[Fe(CN)₆], hence Fe = +2 and the ligand = CN⁻.

Sodium nitroprusside = Na₂[Fe(CN)₅NO], where Fe = +2 and the ligands are CN⁻ and NO⁺.

Zeise's salt is K[PtCl₃(C₂H₄)]·H₂O, where Pt is +2, not +3, and the ligand is Cl⁻. Therefore, matching (4), (S), (iv) is incorrect.