Americium
Elemental State Am
Electron Configuration 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p67s25f7
First Ionization Potential 5.974 eV
Electron Affinity  
Z*  
Pauling Electronegativity   
Covalent Radius  
Metallic Radius  
Ionic Radius  
van der Waal's Radius  
Melting Point 1176 oC
Boiling Point 2011 oC
Density 13.67 g/cm3
Other Properties Man made; all isotopes are radioactive

241Am half-life = 432.2 years 

243Am half-life = 7.37×103 years