Astatine
Elemental State At2 (probably)
Electron Configuration 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p5
First Ionization Potential  
Electron Affinity 2.8 eV (calculated)
Z*  
Pauling Electronegativity 2.2
Covalent Radius  
Metallic Radius  
Ionic Radius  
van der Waal's Radius  
Melting Point 302 oC
Boiling Point 337 oC
Density g/cm3
Other Properties All isotopes are radioactive

210At half-life = 8.1 hours