Atomic Structure Theories

  • Created by: joelym
  • Created on: 24-04-18 16:54
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  • Atomic Structure Theories
    • Rutherford
      • 1909
      • Nuclear model
        • Alpha particle scattering experiments
          • Expected particles to go straight through and some to be slightly deflected
          • Most passed straight through and  some were slightly deflected but some were deflected backwards
            • This proved there was a  positively charged nucleus in the centre where most of the atom's mass is concentrated
    • Bohr
      • 1913
      • Nuclear model
        • Electrons orbited the nucleus in fixed shells
    • Dalton
      • 1803
      • Solid spheres
    • J.J. Thomson
      • 1897
      • Plum pudding model
        • A postive 'pudding' containing negative charged particles (electrons)
  • Alpha particle scattering experiments
    • Expected particles to go straight through and some to be slightly deflected
    • Most passed straight through and  some were slightly deflected but some were deflected backwards
      • This proved there was a  positively charged nucleus in the centre where most of the atom's mass is concentrated

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