In particle physics, fermions are particles with a half-integer spin, such as protons and electrons. They obey the Fermi-Dirac statistics and are named after Enrico Fermi. In the Standard Model there are two types of elementary fermions: quarks and leptons. The 24 fundamental fermionic flavours are: 12 quarks - 6 particles (· · · · · ) with their 6 corresponding antiparticles (· · · · · ); 12 leptons - 6 particles (·… (More on Fermion)