Atom Timeline

  • Dalton: Solid Sphere Model

    This was the very first model within the discovery of the atom. Dalton claimed in his discovery that the atom was a sphere that could not be divided into particless.
  • Thompson: The Plum Pudding Model

    This model showed that an atom had a positive charged medium and/or a space with negatively charged electrons
  • Rutherford: The Nuclear Model

    This model determines that all of the mass of the atom, are located in the nucleus at the center of the atom.
  • Bohr: The Bohr (Planetary) Model

    Showed that the negatively charged electrons orbit a small, positively charged nucleus
  • Schrodinger: Quantum Mechanics Model

    Explains that Electrons have an intrinsic property called spin, and an electron can have one of two possible spin values: spin-up or spin-down.