by: Endy Castanon


Its Atomic number is 61 and Atomic Mass is 145. It has 61 protons, 84 neutrons, and 61 electrons and its symbol is Pm.


it was discovered by Jacob A. Marinsky, Lawrence E. Glendenin, and Charles D. Loryell. it is named after Prometheus, an important Titan in Greek mythology. This element is mostly used i research labs and in some cases, atomic batteries.