Periodic Table

Events

Alexandre-Emile Béguyer de Chancourtois' telluric screw

1862

John Newlands law of octaves

1864

Dmitri Mendelee grouped elements based on properties

1869

Lothar Meyer periodic table by atomic weight

1869

Henry Gwyn Jeffreys Moseley uses atomic numbers

1914

Glenn T. Seaborg discoveres actinides

1940