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At |
Astatine |
At | |
Atomic number |
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85 | Atomic weight | 209.9871 amu | Stable and very long lived isotopes | N/A | Electronic configuration | 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p5 | Sample reactions | Na + At = NaAt
| Density |
7 g/cm3 (STP) |
Melting | 302 °C |
Boiling | 337 °C |
Covalent radius | Å |
Van der Waals radius | Å |
Ionic radius | N/A Å |
First ionization potential | 9.535 eV = 76906 cm-1 = 920.0 kJ/mol
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Electron affinity | -2.798 eV = -22570 cm-1 = -270.0 kJ/mol |
Wikipedia article about Astatine |
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