Fermions, named after Enrico Fermi, are particles which form totallyantisymmetric composite quantum states. As a result, they are subject to the Pauli exclusion principle and obey FermiDirac statistics. The spinstatistics theorem[?] states that fermions have halfinteger spin.
The elementary particles which make up matter are fermions, predominantly quarks (which form protons and neutrons) and electrons. These elementary fermions are classified into two groups: leptons and quarks.
Examples of fermions:
See also: Identical particles
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