Notes
| Isotopes of Seaborgium |
| Notes
|
| There are 11 known isotopes of Seaborgium, the longest-lived isotope is 269Sg which decays through alpha decay and spontaneous fission. It has a half-llife of 22 seconds. |
| The shortest-lived isotope is 258Sg which also decays through alpha decay and spontaneous fission. It has a half-llife of 2.9 ms. |