Does the spacing between the vibronic peaks in the fluorescence emission spectra have to be the...

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Chemistry

Does the spacing between the vibronic peaks in the fluorescenceemission spectra have to be the same as those in absorptionspectra? why?

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First of all many compounds do not emit light after absorption of radiation so these molecules do not have an excitation spectrum The reason is that the absorbed energy can dissipate in the molecule without emitting lightfotons Secondly molecules absorb light to different excited states Emission comes from the lowest of these states called the See Answer

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