Californium
Elemental State Cf
Electron Configuration 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p67s25f10
First Ionization Potential 6.30 eV
Electron Affinity   
Z*   
Pauling Electronegativity   
Covalent Radius   
Metallic Radius   
Ionic Radius   
van der Waal's Radius   
Melting Point ~900 oC
Boiling Point   
Density   
Other Properties Man made; all isotopes are radioactive

249Cf half-life = 351 years 

252Cf half-life = 900 years