Which of the following compounds show colour due to – transition?

Question

Canvas Classes · Accepted Answer

transitions require partially filled d orbitals (–)

| Compound | Metal | O.S. | d config | Colour origin |
|----------|-------|------|----------|---------------|
|  | Cu | +2 |  |  transition ✓ |
|  | Cr | +6 |  | Charge transfer ✗ |
|  | Cr | +6 |  | Charge transfer ✗ |
|  | Mn | +7 |  | Charge transfer ✗ |

() has one unpaired electron and shows  transition — responsible for the blue colour of .

Answer: Option (1) —

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