Californium was discovered by Stanley Thompson, Kenneth Street, Jr., Albert Ghiorso and Glenn T. Seaborg in 1950 at the University of California at Berkeley.
Name: Californium
Symbol: Cf
Atomic number: 98
Atomic weight: 251.08
State: solid
Group, period, block: n/a, 7, f
Color: silvery
Classification: actinide
Electron configuration: 5f10 7s2
2,8,18,32,28,8,2
Physical properties
Density: 15.1 g/cm-3
Melting point: 1173 K,900 °C,1652 °F
Boiling point: 1743 K,1470 °C,2678
Atomic properties
Oxidation states: 2, 3, 4[4]
Electronegativity: 1.3 (Pauling scale)
Ionization energies: 1st: 578.8 kJ·mol-1
Covalent radius: no data
Van der Waals radius: no data
- Cf
Electron Configuration
Isotopes
Californium has no stable isotopes. The first isotope to be synthesized was 245Cf in 1950.