The three subatomic particles of all atoms are protons, neutrons and electrons.
Work Step by Step
Protons have a Positive (+ve) charge and a mass of 1.0072766 a.m.u. Neutrons have no charge (they are neutral). Neutrons also have a mass of 1.0086654 a.m.u Electrons have a Negative (-ve) charge and a mass of 0.000548597 a.m.u.