A.E.Beguyer de Chancourtois discovers periodic table (french geologist) (5 ore 52 min, 12 gen 1862 anni – 16 ore 41 min, 18 gen 1863 anni)
Descrizione:
Periodic Table: Ordering of chemical elements showing physical properties and periodicity of a chemical.
He set up a cylinder with increasing atomic weight, 16 elements on each turn. The vertical elements were similar.
"The properties of the elements are the properties of the numbers." Saw that properties reoccur every 7 elements.
Errors in chart: Ions and compounds in addition to the elements.
Aggiunto al nastro di tempo:
History of the Periodic Table
Data:
