Physicists have filled in some longtime blank spaces on the periodic table, calculating electron affinities of the lanthanides, a series of 15 elements known as rare earths. Physicists at Michigan ...

Last week, we explored the evolution of the periodic table, with all its elements in order. Now that we’re well-organized, let’s dive into the reasoning. * The table is generally sorted by the number ...

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 ...

THE rare-earth elements, or lanthanides, comprise the 15 elements in the periodic table with atomic numbers 57-71. Often included with the lanthanides are scandium (atomic number 21) and yttrium ...