Who discovered electron proton neutron Share with your friends Share 0 Pali answered this Electrons by JJ Thomson .protons by E.goldstein and neutrons by J.chadwick 1 View Full Answer Swati answered this Electrons-J.J Thomson Proton-J.Chadwick Neutron-E.Goldstein 0 Swati answered this Sorry names of scoentists have got exchanged in the above answer it should be proton - e.goldstein and neutron - j chadwick.sorry again 0 Prithvi Raj Singh answered this Electron - JJ Thomson Proton - E . Goldstein Neutron - James Chadwick 0