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What is the wavenumber of violet color?

What is the wavenumber of violet color? Correct Answer 25 x 103 cm-1

The wavenumber is the reciprocal or the inverse of wavelength. Wavenumber = 1/Wavelength. Its unit is cm-1. The wavelength of violet color is 400nm as seen in the electromagnetic spectrum. So wavenumber = 1/400nm = 25 x 103 cm-1.

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