In chemistry, the proton (in Greek proton means first) is a subatomic particle an electric charge elementary positive (1.602 × 10 -19 coulombs) and a mass of 938.3 MeV / c 2 (1.6726 × 10-27 kg) or, similarly, about 1836 times the mass of an electron . Experimentally, the proton is observed as stable, with a lower limit on its half-life about 1035 years, although some theories predict that the proton can decay, ie the particles lose their posse and consistency as such the atom. The proton and the neutron , together known as nucleons , and which constitute the nucleus of atoms.
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