The last of the elements to be identified was isolated last week. Ever since bearded Russian Professor Dmitri Ivanovich Mendeléeff classified the probable chemical elements in 1869 and arranged them ...

Scientists have uncovered hints of a world of new elements beyond the periodic table. A new study has found that ancient stars may have been producing extremely heavy elements that remain unknown to ...

Rare-earth elements are a set of metallic elements in the periodic table. Chemists usually refer to a group of 17 elements when they use this label: the 15 lanthanides from lanthanum to lutetium, and ...