What is the difference between protons, electrons, and neutrons?

protons are positive neutron are neutral and electrons are negative.

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 collectively referred to as "nucleons".

a neutron is a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.

a electron is a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.