Atomic theory timeline

By newb1239
  • 400

    Democritus

    Founder of the atom
  • Period: 400 to

    atomic theory timeline

  • Dalton

    assumed the atom cannot be destroyed/made Made the Dalton atomic theory

  • Thomson

    Discovered the electron and made the plum pudding atomic model

  • milkman

    measured the charge of the electron oil drop experiment

  • Moesley

    X-rayed an atom

  • Bohr

    thought there were shells of electrons
    bohr planetary model

  • Schrodinger

    discovered the electron cloud that held moving particles

  • Chadwick

    proved the existance of the electron

  • Mendeleev

    made the perodic table

  • Rutherford

    he discovered the nucleus and also said it had a positve charge and also very dense gold foil expermint