"Because it has no stable isotopes, promethium was the last lanthanide to be discovered and has been the most difficult to study," said ORNL's Ilja Popovs, who co-led the research. Most rare earth ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The Periodic Table of Elements is a testament to the many millennia of human exploration of the chemical ...

Conceptual art shows the rare earth element promethium in a vial surrounded by an organic ligand. ORNL scientists have discovered hidden features of promethium, opening a pathway for research into ...

Experimental first Conceptual art showing the rare-earth element promethium in a vial surrounded by an organic ligand. (Courtesy: Jacquelyn DeMink, art; Thomas Dyke, photography; ORNL, US Dept. of ...

A century ago, so few natural elements remained undiscovered, and so many scientists were scouring the Earth for the honor of finding them, that disputes over who discovered what first became ...

Nearly 80 years after scientists at Oak Ridge National Laboratory discovered an extremely rare radioactive element called promethium, a team at the lab published a landmark study on the subject that ...

Jacob A. Marinsky, a chemist who helped discover promethium, No. 61 in the periodic table and one of several elements isolated during work on the Manhattan Project, died Sept. 1 at his home in Buffalo ...

One of the rarest and most mysterious elements in the periodic table has finally given up some crucial chemical secrets, eight decades after its discovery. Researchers at Oak Ridge National Laboratory ...

Add Yahoo as a preferred source to see more of our stories on Google. One of the proud achievements of Oak Ridge National Laboratory is the discovery of three elements either by its own staff or in ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Although the Periodic Table of Elements is an impressive achievement of human understanding, scientists ...