29
/
en
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
98811
8760
2
Create
Public Timelines
Library
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
nov 25, 1864 - Lothar Meyer
Description:
Categorized elements into 6 groups according to their "valence."
Added to timeline:
3 Oct 2017
0
0
410
Hazal and Verda atomic timeline
Date:
nov 25, 1864
Now
~ 159 years ago