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Subatomic particles

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Subatomic Particles • Protons – are positively charged particles. • Ernest Rutherford – alpha scattering experiment. Subatomic Particles • Electrons – are negatively charged particles. • J.J. Thomson – Cathode ray tube Subatomic Particles • Neutrons – are neutrally charged particles. • James Chadwick Element Atomic Mass Atomic No. # of Proton # of # of Electron Neutron Cr 52 24 24 24 28 Ge 73 32 32 32 41 Cu 64 29 29 29 35 K 39 19 19 19 20 ...
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