roentgenium

Periodic table: the chemical element of atomic number 111, a radioactive element produced artificially. Uses of Roentgenium: The only uses of roentgenium are for scientific study, to learn more about its properties, and for the production of heavier elements. Roentgenium Sources: Like most heavy, radioactive elements, roentgenium may be produced by fusing two atomic nuclei or via decay of an even heavier element. How it got the name: Roentgenium is a chemical element with the symbol Rg and atomic number 111. ... Roentgenium was first created in 1994 by the GSI Helmholtz Centre for Heavy Ion Research near Darmstadt, Germany. It is named after the physicist Wilhelm Röntgen (also spelled Roentgen), who discovered X-rays.