According to crystal field theory, the correct order of ligands with respect to their decreasing order of field strength is
- Cl- > NH3 > H2O > CO
- CO > NH3 > H2O > Cl-
- CO > H2O > NH3 > Cl-
- Cl- > H2O > NH3 > CO
Answer
(2) CO > NH3 > H2O > Cl-
Solution
According to the spectrochemical series in crystal field theory:
Cl- < H2O < NH3 < CO
Arranging in decreasing order of ligand field strength:
CO > NH3 > H2O > Cl-
Answer: (2)