The vibrations of the methane CH4 molecule belong to the following symmetries: A1 + E + 2T2 while those of the deuterated methane CH3D belong to: 3A1 and 3E. How many bands are active in IR and Raman in each molecule
Electronic Transitions and Spectroscopy
The term “electronic” connotes electron, and the term “transition” implies transformation. In a molecule, the electrons move from a lower to a higher energy state due to excitation. The two energy states, the ground state and the excited state are the lowest and the highest energy states, respectively. An energy change is observed with this transition, which depicts the various data related to the molecule.
Photoelectron Spectroscopy
Photoelectron spectroscopy (PES) is a part of experimental chemistry. It is a technique used in laboratories that involves projecting intense beams of radiation on a sample element. In response, the element ejects electrons for which the relative energies are measured.
The vibrations of the methane CH4 molecule belong to the following symmetries: A1 + E + 2T2
while those of the deuterated methane CH3D belong to: 3A1 and 3E.
How many bands are active in IR and Raman in each molecule
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