A stable particle with positive charge equal to the negative charge of an electron.
The most common hadron, a baryon with electric charge +1 equal and opposite to that of the electron. Protons have a basic structure of two up quarks and one down quark (bound together by gluons). The nucleus of a hydrogen atom is a proton. A nucleus with electric charge Z contains Z protons; therefore the number of protons is what distinguishes the different chemical elements.
An elementary particle with a positive electric charge and a mass that is given the value 1 on the scale of atomic weights.
positively charged particle of atom nucleus.
Positively charged elementary particle, a constituent of the nucleus of all atoms. It belongs to the baryon group of hadrons and is composed of two up quarks and one down quark. A proton is extremely long-lived, with a life span of at least 1032 years. It carries a unit positive charge equal to the negative charge of an electron. Its mass is almost 1,836 times that of an electron, or 1.673 × 10-24 g. The number of protons in the atom of an elementis equal to the atomic number of that element. + prikaži više