Pauli Exclusion Principle

Topics: Quantum mechanics, Electron, Wolfgang Pauli Pages: 3 (822 words) Published: October 28, 2014
Pauli Exclusion Principle
Wolfgang Ernst Pauli was an Austrian theoretical physicist famous for his work on the spin and quantum theory, and for the beneficial finding of the Pauli exclusion principle. Pauli was born on April 25th, 1900 and died on December 15th, 1958. He was a Foreign Member of the Royal Society of London and a member of the Swiss Physical Society, the American Physical Society and the American Association for the Advancement of Science. Pauli helped to set in place the basis of the atomic theory. His suggestion of the hypothesis explaining the behavior of electrons in atoms first came out in 1925. Then in 1945, he was awarded the Nobel Prize in Physics for his help and contribution to the atomic theory, through introducing the Pauli exclusion principle, involving the spin and quantum theory, and for strengthening the base of chemistry.

The Pauli exclusion principle includes the quantum mechanical principle and the electron spin. It states that two electrons cannot occupy or have identical quantum states in the same atom. This means that only two electrons can occupy an orbital and they must spin in opposite directions. Each electron in an atom has its own set of quantum numbers which describes the energy of the electron as a matter of shape, orientation, orbital distance and spin: n, l, ml or ms. Pauli gave proof of an existing relationship between spin and statistics of elementary particles, which consolidated his theory. Scientists were able to visualize the atomic structure of atoms and electrons’ behavior in chemical elements after Pauli’s discovery of the exclusion principle. Although Pauli was extremely influenced by two other scientists, Ernst March and Carl Jung, he himself influenced the important Ralph Kronig.

Pauli made numerous contributions to modern theoretical physics, including explaining the Zeeman effect, hypothesizing the existence of neutrino, and developing the Pauli exclusion principle. His major contributions were to...
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