97
Bk
Berkelium
Actinide period 7 f-block discovered: 1949
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 97
- Atomic mass
- 247.07031 a.m.u.
- Electron configuration
- [Rn]7s2 5f9
- Electronegativity
- 1.3 on the Pauling scale
- Atomic radius
- 244 pm
- Ionization energy
- 6.23 eV
- Oxidation states
- +4, +3
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Solid
- Melting point
- 1323 K (1 049,85 °C)
- Density
- 14 g/cm³