The element that made the atomic age possible and powers spacecraft beyond the Sun's reach.
- Atomic number
- 94
- Atomic mass
- 244 u
- Phase
- Solid
- Electron configuration
- [Rn] 5f⁶ 7s²
- Melting point
- 913 K · 639.9 °C
- Boiling point
- 3,505 K · 3,231.9 °C
- Density
- 19.85 g/cm³
- Electronegativity
- 1.28
- Period / Group
- 7 / —
- Discovery year
- 1940