Atomic Model 2
Updated: 1/15/2021
Atomic Model 2

Storyboard Text

  • -Henry Mosely's work was used to reorganize the periodic table based on atomic number instead of atomic mass.-He found out the charges of most nuclei with his x-ray tubes.
  • Henry Mosely
  • “The atomic number of an element is equal to the number of protons in the nucleus.”
  • 1914
  • -Bohr determined atomic structure by using a model that had atoms built up of successive orbital shells of electrons.-Electrons are arranged in circles around the nucleus. Each circle has a differentenergy.
  • Niels Bohr
  • 1922
  • Schrodinger
  • 1930
  • -Came across the electron cloud model that described and introduced "wave mechanics". This was the mathematical model of the atom.-The electrons do not travel in fixed clouds, but the center of an atom is encircled by an electron cloud that is divided into shells.
  • 1932
  • -Discovered the neutron that had no electrical charge, it was neutral. Did this using alpha particles.-He also managed to find out it is the same size as a proton and located in the nucleus.
  • James Chadwick
  • -Released energy from the atoms nucleus.-This was the first controlled chain reaction ever conducted.
  • Enrico Fermi
  • 1942