Berkelium was discovered by Glenn T. Seaborg, Albert Ghiorso, Stanley G. Thompson and Kenneth Street in December 1949 at at the Berkeley Radiation Laboratory.
Name: Berkelium
Symbol: Bk
Atomic number: 97
Atomic weight: 247.07
State: solid
Group, period, block: n/a, 7, f
Color: silvery
Classification: actinide
Electron configuration: 5f9 7s2
2,8,18,32,27,8,2
Physical properties
Density: 14.78 g/cm-3
Melting point: 1259 K,986 °C,1807 °F
Boiling point: no data
Atomic properties
Oxidation states: 3, 4
Electronegativity: 1.3 (Pauling scale)
Ionization energies: 1st: 601 kJ·mol-1
Covalent radius: no data
Van der Waals radius: no data
- Bk
Electron Configuration
Isotopes
Berkelium is an artificial element, it has no stable isotopes. The isotope first synthesized was 243Bk in 1949.