GKFix MCQ Question

Why do the complexes [Ni(CO)4] and [Ni(CN)4]^2- have different geometries?

• A. Because CO and CN- are different ligands.
• B. Because they have different charges.
• C. Because Ni has different oxidation states.
• D. Because the different ligands (CO vs CN-) and the different oxidation states of Ni (0 vs +2) result in different numbers of d-electrons and different ligand field strengths, favoring different geometries.