Pauli exclusion principle: electrons and quantum numbers

Pauli Exclusion Principle

1. No two electrons in an atom can have the samen number of quantum numbers

   • Example of an general principle which applies not only to Electrons, also applies to other particles of half-integer spin (fermions)
     • It doesn´t apply to particles of integer spin (bosons).

2. The nature of the Pauli exclusion principle can be see it by supposing that electrons 1 and 2 are in states a and b respectively.

   • • Can be illustrated like this
     • But this illustration is wrong beacuse electrons are identical and indistinguishable
       • • The wavefunction for the state in which both states "a" and "b" are occupied by the electrons can be illustrated

3. Pauli Exclusion Principle Applications

4. BY LUIS CARLOS SOSA TOLEDO 1°B

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