Question

Violet color of iodine vapour is due to which transition

Answer 1

d_d transition.......,..,.

Answer 2

Hey dear,

● Answer -
π to σ orbital transition.

● Explaination -
- When iodine vapourizes, it transits from π to σ orbital which falls on violet region of visible light spectrum.
- Here, iodine absorbs red colour from visible spectrum and emits violet colour to the observer.
- Therefore, iodine vapour is violet in colour.


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