1. Electron : J. J. Thomson
  2. Anode rays : Antoine Lavoisier
  3. Neutron : James Chadwick
  4. The nucleus of an atom: Ernest Rutherford
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Option 2 : Anode rays : Antoine Lavoisier

  • The Anode rays were discovered by Eugen Goldstein.
  • The Electron was discovered by J. J. Thomson.
  • The Neutron was discovered by James Chadwick.
  • The nucleus of an atom as discovered by Ernest Rutherford
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