Internal conversion (chemistry) | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-28

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Internal_conversion_(chemistry)


00:00:41 Examples
00:02:14 See also



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SUMMARY
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Internal conversion is a transition from a higher to a lower electronic state in a molecule or atom. It is sometimes called "radiationless de-excitation", because no photons are emitted. It differs from intersystem crossing in that, while both are radiationless methods of de-excitation, the molecular spin state for internal conversion remains the same, whereas it changes for intersystem crossing. 
The energy of the electronically excited state is given off to vibrational modes of the molecule. The excitation energy is transformed into heat.