Element: roentgenium |
Name : roentgenium |
Symbol : Rg |
Atomicnumber : 11 |
Relativeatomicmass : [ 281 ] (longest lived isotope) |
Standardstate : presumably a solid at 298 K |
Appearance : unknown, but probably metallic and silvery white or grey in appearance |
Classification : Metallic |
Groupinperiodictable : 11 |
Groupname : (none) |
Periodinperiodictable : 7 |
Blockinperiodictable : d |
Shellstructure : 2.8.18.32.32.18.1 |
CASRegistry : 54386-24-2 |
Description : Roentgenium, was discovered on 8th December 1994 at the GSI in Darmstadt, Germany. |