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charge multiplet comparison table
Subject is part of has quantum behavior has number of quark has spin obey has synonym has mass has definition
nucleonnucleusFermi-Dirac statistics31/2exclusion principle 939 MeVThe generic name for the proton and the neutron.
pion Bose-Einstein statistics2-has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Pressuncertainty principleπ-meson270 meAn unstable nuclear particle of mass intermediate between that of a proton and an electron. The pions are believed to be the particles exchanged by nucleons, resulting in the strong nuclear force; they play a role in the strong interactions analogous to that of the photons in electromagnetic interactions.

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