The rare earth with the greatest neutron capture cross-section of any stable nuclide.
- Atomic number
- 64
- Atomic mass
- 157.25 u
- Phase
- Solid
- Electron configuration
- [Xe] 4f⁷ 5d¹ 6s²
- Melting point
- 1,585 K · 1,311.9 °C
- Boiling point
- 3,546 K · 3,272.9 °C
- Density
- 7.9 g/cm³
- Electronegativity
- 1.2
- Period / Group
- 6 / —
- Discovery year
- 1880