Roentgenium (Rg) is a synthetic chemical element with atomic number (Z) 111, group 11, period 7, atomic mass number 282. The Roentgenium (Rg) has the physical properties of a noble metal and, were it long enough lived it should be possible to make compound of it although, like gold. Roentgenium does not have any known application and little is known about it. (Refer to the Chemical Element; Periodic Table)
