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Evolution of the Atomic Model

By 20lydiajyates

  • Dalton Model

    John Dalton pictures atoms as tiny, indestructible particles, with no internal structure

  • Thompson Model

    J.J. Thompson discovers the electron which later leads to his "plum pudding" model.

  • Hantaro Nagaoka

    Japanese physicist suggests that an atom has a central nucleus. Electrons move in orbits like the rings around saturn

  • Rutherford Model

    Rutherford finds that an atom has a small, dense, positively charged nucleus

  • Bohr Model

    The electron moves in a circular orbit at fixed distances from the nucleus

  • Broglie

    Moving particles like electrons have some properties of waves.

  • Electron Cloud Model

    Erwin develops mathematical equations to describe the motion of electrons in atoms.

  • Chadwick

    confirms existence of neutrons.