Fermium
Elemental State Fm
Electron Configuration 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p67s25f12
First Ionization Potential 6.50 eV
Electron Affinity   
Z*   
Pauling Electronegativity   
Covalent Radius   
Metallic Radius   
Ionic Radius   
van der Waal's Radius   
Melting Point 1527 oC
Boiling Point  
Density  
Other Properties Man made; all isotopes are radioactive

250Fm half-life = 30 minutes 

257Fm half-life = 100.5 days