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The proton is a positively charged spin- baryon with ordinary valence quark content . It carries electric charge and baryon number one. A hydrogen atomic nucleus is a single proton, while other ordinary atomic nuclei contain protons together with neutrons.
A proton is composite even when an atomic calculation treats it as a pointlike source. Electron scattering at increasing momentum transfer probes its spatial and magnetic response, whereas low-energy atomic behavior often needs only its charge, mass and magnetic moment. Its mass is about electron masses; that ratio does not make it a bound collection of electrons.
A proton is a subatomic particle found in the nucleus of an atom. It has a positive electric charge of +1e (approximately +1.602 x 10^-19 coulombs) and a relative mass of about 1 atomic mass unit (amu), which is roughly 1836 times the mass of an electron. Protons, along with neutrons (which are neutral particles), make up the nucleus of an atom, while electrons orbit the nucleus.