What is the coordination number of the central metal ion in [Fe(CO)]?
Answer: 6 — three bidentate oxalate ligands, each donating through two O atoms.
Solution
Oxalate (CO) is a bidentate ligand (two donor O atoms).
(Coordination number counts donor atoms, not ligands.)
(Coordination number counts donor atoms, not ligands.)
CBSE Class 12 Board · 2001 · All India · Subjective