jan 3, 1862 - First Recognized Periodicity
Description:
In 1862, French geologist named Alexandre Beguyer de Chancourtois published a list of all the known elements. Although flawed as it contained some ions and compounds, and also was put into geological terms without a diagram. Leading to it being ultimately ignored until Mendeleev reworked it.Added to timeline:
Date:
jan 3, 1862
Now
~ 163 years ago