Molecular electronic transition
Excitation of electrons in a molecule to a higher energy level / From Wikipedia, the free encyclopedia
For electronic transitions in film and video, see Wipe (transition).
In theoretical chemistry, molecular electronic transitions take place when electrons in a molecule are excited from one energy level to a higher energy level. The energy change associated with this transition provides information on the structure of the molecule and determines many of its properties, such as colour. The relationship between the energy involved in the electronic transition and the frequency of radiation is given by Planck's relation.