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hi guys
I want to know what is the Franck-Condon principle?... please in details
thanks for all
I want to know what is the Franck-Condon principle?... please in details
thanks for all
The Franck-Condon principle is a fundamental concept in spectroscopy that explains the probability of electronic transitions between different energy states of a molecule. It states that during an electronic transition, the nuclei of the molecule remain fixed in their initial positions, with no change in their vibrational or rotational energy levels.
The Franck-Condon principle was first proposed in 1926 by two German physicists, James Franck and Gustav Hertz. They observed that during an electronic transition in a gas molecule, the energy is absorbed or emitted almost instantaneously, without any significant change in the molecule's nuclear configuration.
The Franck-Condon principle is essential in understanding the intensity and shape of spectral lines in molecular spectroscopy. It explains why certain electronic transitions are more likely to occur than others, and how the energies of these transitions can be measured to determine molecular structure and properties.
Yes, the Franck-Condon principle is a universal concept that applies to all molecules, regardless of their size or complexity. It is a fundamental principle in quantum mechanics and is used in various fields of chemistry, such as analytical, physical, and organic chemistry.
The Franck-Condon principle is experimentally verified through spectroscopic techniques such as absorption, emission, and Raman spectroscopy. By measuring the intensity and shape of spectral lines, scientists can determine the probability of electronic transitions and confirm the validity of the Franck-Condon principle.