33
/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 30, 2025
193626
16892
2
Public Timelines
FAQ

jan 23, 1900 - 1900 Frederik Soddy used the term ISOTOPE to explain the unintentionel breakdown of radioactive elements

Added to timeline:

26 Oct 2017
0
0
351

Date:

jan 23, 1900
Now
~ 125 years ago