evolution of atomic model

By Bayou Dyl

  • John Dalton model

    pictures atoms as indestructible particles with no internal structure

  • JJ thomson model

    discovers electron. Leads to his "Plum pudding" model. Pictures electron embedded in a sphere of positive electrical charge.

  • Hantaro model

    suggested atoms have a small central nucleus. Electrons move in orbits.

  • Ernest Rutherford

    He finds that an atom has a small positively charged nucleus. Electrons move around nucleus.

  • Neil Bohr model

    The electron in a circular orbit at fixed distance from the nucleus.

  • Louis de Brogile

    Proposes that moving particles have some properties of waves.

  • Erwin Schrodinger

    Created mathematical equations to describe the motion of electrons in atoms, work leads to electron cloud model.

  • James Chadwick

    He confirms the existence of neutrons which have no charge, Atomic nuclei contain neutrons and positively charged protons.