29
/
en
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
March 15, 2023
347235
30168
2
Create
Public Timelines
Library
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
jan 1, 1869 - Dimitri Mendeleev
Description:
Russian scientist who developed the original periodic table, which was ordered by the element's atomic mass.
Added to timeline:
28 Nov 2017
0
0
179
Development of the Atomic Theory
Date:
jan 1, 1869
Now
~ 154 years ago
Images: