File:Quark_structure_proton.svg · Wikimedia Commons · See Wikimedia Commons
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Also known as p, ¹H⁺, 1H+, p⁺
A proton is a stable subatomic particle, symbol , H+, or 1H+ with a positive electric charge of +1 e (elementary charge). Its mass is slightly less than the mass of a neutron and approximately times the mass of an electron (the proton-to-electron mass ratio). Protons and neutrons, each with a mass of approximately one dalton, are jointly referred to as nucleons (particles present in atomic nuclei).
AI overview
A proton is a tiny, positively charged particle that is one of the basic building blocks of atoms, found in the nucleus alongside neutrons. Protons matter because their number determines what chemical element an atom is, and they are essential to the structure and behavior of all matter.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Particle.classification
- Baryon
- Particle.name
- Proton
- Particle.image
- Quark structure proton.svg
- Particle.caption
- The valence quark content of a proton. The color assignment of individual quarks is arbitrary, but all three colors must be present. Forces between quarks are mediated by gluons.
- Particle.composition
- 2 up quarks (u), 1 down quark (d)
- Particle.statistics
- Fermionic
- Particle.group
- Hadron
- Particle.interaction
- Gravity, electromagnetic, weak, strong
- Particle.antiparticle
- Antiproton
- Particle.theorized
- William Prout (1815)
- Particle.discovered
- Observed as H+ by Eugen Goldstein (1886). Identified in other nuclei (and named) by Ernest Rutherford (1917–1920).