Question

Which ligand among the following has highest splitting power of d-orbitals of central metal ion?

Options

• NCS

• OH^-

• CO

• S^2-

Answer 1

CO

Explanation:

Strong ligands have larger value of Δ₀ and in case of weak ligands Δ₀ values are smaller. The common ligands can be arranged in a series in the order of their decreasing field strength, as follows.

CO > CN > en > NH₃ > EDTA > NCS > H₂O > `"C"_2"O"_4^(2-)` > OH^- > F^- > S2^- > Cl^- > SCN^- > Br^- > I^-