atomic model

By basketallzk99
  • democritus model created
    400

    democritus model created

    Purposed that the element was made of tiny,solid particles that could not be subdivided.
  • Dalton model created

    Dalton model created

    Said the atom was a round ball with protons and electron embedded evenly throughout.
  • electrons discotverd

    electrons discotverd

  • Thompson model created

    Thompson model created

    Purposed that all atoms contained negative carge particles. Thought the negative particles were evenly embedded througout the a costivly charged sphere.
  • Rutherfords model created

    Rutherfords model created

    Purposed that all the mass of an atom was concentrated in one cental atomic nucleus sorrounded by electrons.
  • bor model created

    bor model created

    Purposed that electrons follow a fixed orbit around the nucleus.
  • electron cloud model created

    electron cloud model created

    This the current accepted model of the of atomic structure. The electrons do not follow a fixed orbit but tend to occur more frequently in certain areas.
  • protons discovered

    protons discovered

    relized that there must be positive aroms in a element to balence out the electrons
  • neutrons discovered

    neutrons discovered

    Not being dicovered until 1932 there was a slimm chance of finding that the neutrons.