PROTON: Inside the Nucleus and a positively charged particle, Discovered by Ernest Rutherford, +1, Quarks, NEUTRON: Inside the Nucleus and has no charge, Holds the Nucleus together, Constitute to the atomic mass together with Proton, Discovered by James Chadwick, 0, ELECTRON: Outside the Nucleus and a negatively charged particle, Discovered by J.J Thomson, Discovered with the use of Cathode rays, Responsible for the reactivity of an atom, -1, Leptons,

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