Proton

Definition

A proton is a subatomic particle found in the nucleus of an atom that carries a positive electric charge. Its presence, along with neutrons, contributes to the atomic mass of an element.

Related terms

Atom: The smallest unit of matter that retains the identity of the substance composed of protons, neutrons, and electrons.

Neutron:

A neutral (uncharged) subatomic particle found in the nucleus of an atom that contributes to its mass alongside protons but does not affect its electric charge.

Electron: A negatively charged subatomic particle orbiting the nucleus of an atom, balancing the positive charge of protons to determine the chemical properties of an element