A Proton is a positively charged subatomic particle, symbol p or p+, with a positive electric charge of +1e elementary charge and a mass slightly lower than a neutron. A Proton is 1 of 3 subatomic particles that makjes up an Atom. Proton, the name, comes from the Greek Language, translating to First. The Proton was first theorized in 1815 by English Chemist/Physician/Natural Theologian William Prout; then it was discovered in 1886 by German Physicist Eugen Goldstein. It was later named The Proton in 1917 by New Zealand Physicist Ernest Rutherford. The Proton has a mass of 1.67262192369(51)×10^−27 kilograms, a charge radius of 0.8414 femtometres and mean lifespan of 2.1X10^29 Years.
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