Chemistry - Coordination Chemistry Question with Solution | TestHub

The stability of coordination complexes is influenced by the nature of the ligand (stronger field ligands lead to greater stability), the chelate effect, and the central metal ion (higher charge, larger 3rd row transition metals are more stable).

A. Correct. Stability increases with ligand field strength: F⁻ (weak) < C₂O₄²⁻ (chelate, moderate) < CN⁻ (strong).

B. Incorrect. Stability increases down a group for transition metals: Fe < Ru < Os.

C. Correct. Stability increases with ligand field strength (H₂O < CN⁻) and down a group (Co < Ir).

D. Correct. Stability increases with ligand field strength: Cl⁻ (weak) < NH₃ (moderate) < CN⁻ (strong).