evolution of the atomic model

  • Dalton model

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

    J.J. Thomson discovers the electron. He pictures electrons embedded in a sphere of positive electrical charge.
  • Hantero Nagaoka

    Hantero Nagaoka suggest an atom has a central nucleus and electrons move in orbits.
  • Ernest Rutherford

    Atom has a small, dense, positively charged nucleus. Electrons move around the nucleus.