| 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 |