Atom

The history of the Atom

By maddy1098
  • Period: to

    History of the atom

  • John Dalton

    John Dalton
    John Dalton proposed that elements consisted of atoms that were identical and had the same mass and that compounds were atoms from different elements combined together.

  • Dmitri Mendeleev

    Dmitri Mendeleev
    Dmitri Mendeleev created the periodic table.

  • J.J. Thompson

    J.J. Thompson
    J.J. Thompson determined the charge to mass ratio of electrons.

  • Rutherford

    Rutherford
    Rutherford discovered alpha, beta, and gamma rays in radiation.

  • Niels Bohr

    Niels Bohr
    Niels Bohr proposed an atomic structure theory that stated the outer orbit of an atom could hold more electrons than the inner orbit.

  • Erwin Schroedinger

    Erwin Schroedinger
    Erwin Schroedinger developed wave mechanics which describe the behaviour of quantum systems for bosons.