InterviewSolution
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InterviewSolution
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Which of these statements about `[Co(CN)_6]^(3-)` is true?A. `[Co(CN)_(6)]^(3-)` has no unpaired electrons and will be in a high-spin configurationB. `[Co(CN)_(6)]^(3-)` has no unpaired electrons and will be in a low-spin configurationC. `[Co(CN)_(6)]^(3-)` has four unpaired electrons and will be in a lowspin configurationD. `[Co(CN)_(6)]^(3-)` has four unpaired electtrons and will be in a high-spin configuration |
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Answer» Correct Answer - B Here cobalt is in `+3` oxidation state and has the electronic confuiguration `3d^(6)` . Since `CN^(-)` is a strong field ligand, all the d-electrons are paired leading to `d^(2)sp^(3)` hybridisation. Thus, `[Co(CN)_(6)]^(3-)` having no unpaired electrons is called an inner orbital or low spin or spin paired complex. |
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