Notes| Isotopes of Astatine |
| Notes |
| Astatine has no stable isotopes. |
| Astatine has 41 known isotopes, all of which are radioactive; the longest-lived isotope is 210At which has a half-life of 8.1 hours. The shortest-lived isotope is 213At which has a half-life of 125 nanoseconds. |
 Notable Isotopes |
 210At [125 neutrons] |
 Abundance: 100% |
| Half life: 8.1 hours
[ Electron Capture ]
|
| Decay Energy: 3.981 MeV |
| Decays to 210Po. |
| Half life: 8.1 hours
[ Alpha Decay ]
|
| Decay Energy: 5.631 MeV |
| Decays to 206Bi. |