On the basis of crystal field theory explain why Co(III) forms paramagnetic octahedral complex with weak field ligands whereas
On the basis of crystal field theory explain why Co(III) forms paramagnetic octahedral complex with weak field ligands whereas it forms diamagnetic octahedral complex with strong field ligands.
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With weak field ligands; ΔO < p, the electronic configuration of Co (III) will be t42g e2g and it has 4 unpaired electrons and is paramagnetic. With strong field ligands, Δ0 > p, the electronic configuration will be t62g e0g. It has no unpaired electrons and is diamagnetic.
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