Electron: Charge = -1, Mass = 0, Found in orbits around the nucleus, Losing/gaining one or more of these creates ions, Proton: Charge = +1, Mass = 1., Found in the central nucleus., Number of these gives atomic number, Number of these + number of another sub atomic particle gives mass number., Neutron: Found in the central nucleus, Number of these + number of another sub atomic particle gives mass number, Difference in the number of these creates isotopes, Mass = 1, Charge = 0,

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