Atomic Properties
- Atomic Number
- 111
- Atomic Mass
- 282.0000 u
- Electron Configuration
- [Rn] 5f14 6d9 7s2
- Electronegativity
- —
- Block
- d-block
- Group
- 11
- Period
- 7
Physical Properties
- Phase (STP)
- solid
- Melting Point
- —
- Boiling Point
- —
- Density
- 28.7000 g/cm³
About Roentgenium
Named after Wilhelm Roentgen, discoverer of X-rays.