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Get Answers to all your Questions
9.20 A solution of is green but a solution of
is colourless. Explain.
Answers (1)
In the case of , we have CN- as a strong field ligand. So, the pairing of electrons will occur. The electronic configuration of Ni+2 is d6. Since all the electrons will be paired thus d-d electronic transition is not possible on this case. Whereas in case of
we have a weak field ligand (H2O). The pairing of electrons will not occur. Thus electrons from a lower state of energy can transit to a higher state of energy and thus will give some colour.
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