Proton vs. Neutron

Protonnoun

(particle) A positively charged subatomic particle forming part of the nucleus of an atom and determining the atomic number of an element, composed of two up quarks and a down quark.

Protonnoun

a stable particle with positive charge equal to the negative charge of an electron

Proton

A proton is a subatomic particle, symbol p or p+, with a positive electric charge of +1e elementary charge and a mass slightly less than that of a neutron. Protons and neutrons, each with masses of approximately one atomic mass unit, are jointly referred to as (particles present in atomic nuclei).

Neutronnoun

(particle) A subatomic particle forming part of the nucleus of an atom and having no charge; it is a combination of an up quark and two down quarks.

Neutronnoun

an elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus

Neutron

The neutron is a subatomic particle, symbol n or n0, which has a neutral (not positive or negative) charge, and a mass slightly greater than that of a proton. Protons and neutrons constitute the nuclei of atoms.