2. A combined system is formed from two separate systems of N localized atoms of spin-1/2 each. While the two systems remain separate (a) Find the number of configurations which give a total spin excess S = S, +S, %3D where S, and S, are the excess spins of the separate systems. (b) For what values of S, and S, is this number of configurations maximum?
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.
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