jan 1, 1900 - Fredrick Soddy-Isotopes
Description:
-Came up with the term "isotopes" or or new elements that explain the unintentional breakdown of radioactive elements.
-different elements can be chemically not distinguishable but have different atomic weights and characteristics
-discovered "half-life"
-made original calculations on energy released during the process of decayy.
Added to timeline:
My Atom Project
Date:
