29
/
en
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
1731525
140165
2
Create
Public Timelines
Library
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
jan 1, 1919 - Rutherford and Chadwick discovered the Proton and the Neutron and that the number of Protons is equal to the charge of an atom.
Added to timeline:
26 Sep 2018
0
0
226
AP Chem Scientist Timeline
Date:
jan 1, 1919
Now
~ 105 years ago