Einsteinium
Elemental State Es
Electron Configuration 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p67s25f11
First Ionization Potential 6.42 eV
Electron Affinity   
Z*   
Pauling Electronegativity   
Covalent Radius   
Metallic Radius   
Ionic Radius   
van der Waal's Radius   
Melting Point ~860 oC
Boiling Point  
Density  
Other Properties Man made; all isotopes are radioactive

253Es half-life = 20 days

254Es half-life = 276 days