The element that glowed in the dark on watch dials, and killed the women who painted them.
- Atomic number
- 88
- Atomic mass
- 226 u
- Phase
- Solid
- Electron configuration
- [Rn] 7s²
- Melting point
- 973 K · 699.9 °C
- Boiling point
- 2,010 K · 1,736.9 °C
- Density
- 5.5 g/cm³
- Electronegativity
- 0.9
- Period / Group
- 7 / 2
- Discovery year
- 1898