One such element is Promethium, and a new study from scientists at Oak Ridge National Laboratory has successfully analyzed chemical properties of the rare earth metal some 80 years after its ...

A new compound containing one of the rarest elements in the world, promethium, has revealed its mysterious properties for the ...

The Kidde-Elgin battery sidesteps this difficulty by mixing the promethium 147 with a phosphor (light-giving substance) and enclosing the mixture in transparent plastic. Electrons from the Pm-147 ...