NEET2026ChemistryCoordination CompoundsActual
According to crystal field theory, the correct order of ligands with respect to their decreasing order of field strength is
Options
- ACl ^-> NH ₃> H ₂ O > CO
- BCO > NH ₃> H ₂ O > Cl ^-
- CCO > H ₂ O > NH ₃> Cl ^-
- DCl ^-> H ₂ O > NH ₃> CO
Correct answer
B. CO > NH ₃> H ₂ O > Cl ^-
Step-by-step solution
According to the spectrochemical series, the arrangement of ligands in the increasing order of their crystal field splitting energy (CFSE) or field strength is: I ^- From the given ligands, the decreasing order of field strength is: CO > NH ₃ > H ₂ O > Cl ^- Answer: CO > NH ₃> H ₂ O > Cl ^-