Element overview
Roentgenium (Rg) is element 111 with a listed atomic mass of 282 u. It is in group 11 and period 7. Its category is transition metal.
Atomic properties
Electron configuration: not listed. Electronegativity: not established. Common oxidation states: not listed.
Physical properties
Density: not listed; melting point: not listed; boiling point: not listed. Values depend on conditions, phase and source.