29
/
en
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
127839
11266
2
Create
Public Timelines
Library
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
jan 5, 1828 - Johann Dobereiner developed groups of 3 elements with similar properties
Added to timeline:
10 Oct 2017
0
0
403
Periodic Table Timeline
Date:
jan 5, 1828
Now
~ 196 years ago