The mass and charge of all three sub atomic particles

Protons, neutrons, and electrons are the three main subatomic particles found in an atom. Protons have a positive (+) charge. An easy way to remember this is to remember that both proton and positive start with the letter "P." Neutrons have no electrical charge.

proton mass 1 charge + 1

neutron mass 1 no charge

electron no mass charge - 1