26
/
en
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
September 30, 2021
152812
13578
2

feb 17, 1912 - -Frederick Soddy was an English chemist who in 1912, hypothesised that elements could exist in different forms, proposing the idea of isotopes.

Added to timeline:

15 Oct 2017
0
0
227
Yet

Date:

feb 17, 1912
Now
~ 109 years ago
PayPal - The safer, easier way to pay online!logo
About & FeedbackTermsPrivacy