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Bookmark or Share- Proton | Definition, Mass, Charge, & Facts | Britannicamatter. hydrogen ion. antiproton. nucleon. Explore an atom's interior to discover the layout of its nucleus, protons, and electrons. See all videos for this article. proton, one of the three basic subatomic particles —along with neutrons and electrons —that make up atoms , the basic building blocks of all matter and chemistry .
- Proton - WikipediaA proton is a stable subatomic particle, symbol p, H +, or 1 H + with a positive electric charge of +1 e (elementary charge). Its mass is slightly less than the mass of a neutron and 1,836 times the mass of an electron (the proton-to-electron mass ratio).
- The proton, a century on | CERN12 June, 2019. An artist’s impression of the mayhem of quarks and gluons inside the proton. (Image: CERN) It is 100 years since Ernest Rutherford published his results proving the existence of the proton. For decades, the proton was considered an elementary particle.
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