NEETChemistryCoordination Compounds
On the basis of crystal field theory, explain why Co(III) forms a paramagnetic octahedral complex with weak field ligands, whereas it forms a diamagnetic octahedral complex with strong field ligands.
Options
- AWeak field ligands cause a higher crystal field splitting, leading to unpaired electrons in Co(III) complexes.
- BWeak field ligands result in a lower crystal field splitting, causing Co(III) complexes to be diamagnetic.
- CStrong field ligands lead to a higher crystal field splitting, resulting in paired electrons in Co(III) comple
- DStrong field ligands cause a lower crystal field splitting, making Co(III) complexes paramagnetic.
Correct answer
A. Weak field ligands cause a higher crystal field splitting, leading to unpaired electrons in Co(III) complexes.
Step-by-step solution
Correct Option is : (A) Weak field ligands cause a higher crystal field splitting, leading to unpaired electrons in Co(III) complexes.