Question

For the complex [Fe(C₂O₄)₃]^3-

1. find oxidation state of Fe
2. write the type of ligand
3. write the type of complex
4. total number of ligand donor atoms.

Answer 1

1.  - 3 = oxidation state of Fe + 3 × (- 2) ∴ oxidation state of Fe = + 3
2. \[\ce{C2O^2-_4}\] is bidentate ligand.
3. Complex is homoleptic and anionic.
4. Number of ligand donor atoms  = 2 × 3 = 6.