Isotopes of Seaborgium
List of known isotopes of the element Seaborgium.
| Isotope | t½ | % | Spin/parity | Radius | Isotopic mass | Discovery |
|---|---|---|---|---|---|---|
| 258Sg | 2.5 ± ms | syn. | 0+ | — | 2.581·108 ±443 keV/c2 | 1997 |
| 259Sg | 0.29 ±5 s | syn. | — | — | 2.591·108 ±194 keV/c2 | 1985 |
| 260Sg | 3.6 ±9 ms | syn. | 0+ | — | 2.601·108 ±22.04 keV/c2 | 1984 |
| 261Sg | 0.23 ±6 s | syn. | — | — | 2.611·108 ±19.85 keV/c2 | 1984 |
| 262Sg | 6.9 ± ms | syn. | 0+ | — | 2.621·108 ±23.79 keV/c2 | 2001 |
| 263Sg | 1 ±2 s | syn. | — | — | 2.631·108 ±101 keV/c2 | 1974 |
| 264Sg | 37 ± ms | syn. | 0+ | — | 2.641·108 ±304 keV/c2 | 2006 |
| 265Sg | 14.4 ± s | syn. | — | — | 2.651·108 ±149 keV/c2 | 1994 |
| 266Sg | 0.34 ± s | syn. | 0+ | — | 2.661·108 ±263 keV/c2 | 2006 |
| 267Sg | 84 ± s | syn. | — | — | 2.671·108 ±281 keV/c2 | 2008 |
| 269Sg | 130 ± s | syn. | — | — | 2.691·108 ±395 keV/c2 | 2010 |
| 271Sg | 96 ± s | syn. | — | — | 2.711·108 ±634 keV/c2 | 2004 |
258SgSeaborgium-258
| Classification | z: 106; n: 152; m: 258 |
|---|---|
| Half life | 2.5 ± ms |
| Natural abundance | synthetic nuclide |
| Spin/parity | 0+ |
| Decay modes | spontaneous fission; α decay |
| Discovery | 1997 |
| Mass excess | 105,200 ±413 keV |
| Binding energy | 7,342 ±2 keV |
| Single-particle energy | 2,147 ±444 keV |
| Q value for electron capture | 3,788 ±423 keV |
259SgSeaborgium-259
| Classification | z: 106; n: 153; m: 259 |
|---|---|
| Half life | 0.29 ±5 s |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission; electron capture (EC) |
| Discovery | 1985 |
| Mass excess | 106,500 ±181 keV |
| Binding energy | 7,340 ±1 keV |
| Single-particle energy | 2,277 ±203 keV |
| Neutron separation energy | 6,848 ±451 keV |
| Q value for electron capture | 4,527 ±189.6 keV |
260SgSeaborgium-260
| Classification | z: 106; n: 154; m: 260 |
|---|---|
| Half life | 3.6 ±9 ms |
| Natural abundance | synthetic nuclide |
| Spin/parity | 0+ |
| Decay modes | α decay; spontaneous fission |
| Discovery | 1984 |
| Mass excess | 106,500 ±20.53 keV |
| Binding energy | 7,342 ±0.079 keV |
| Single-particle energy | 2,732 ±60.29 keV |
| Neutron separation energy | 8,043 ±182 keV |
| Q value for electron capture | 2,874 ±95.24 keV |
| β⁻ decay energy | -6,576 ±197 keV |
261SgSeaborgium-261
| Classification | z: 106; n: 155; m: 261 |
|---|---|
| Half life | 0.23 ±6 s |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission |
| Discovery | 1984 |
| Mass excess | 108,000 ±18.49 keV |
| Binding energy | 7,339 ±0.0709 keV |
| Single-particle energy | 2,957 ±95 keV |
| Neutron separation energy | 6,613 ±27.61 keV |
| Q value for electron capture | 3,697 ±111.5 keV |
| β⁻ decay energy | -5,075 ±180.7 keV |
| β⁻ decay energy with neutron | -13,190 ±197 keV |
262SgSeaborgium-262
| Classification | z: 106; n: 156; m: 262 |
|---|---|
| Half life | 6.9 ± ms |
| Natural abundance | synthetic nuclide |
| Spin/parity | 0+ |
| Decay modes | spontaneous fission; α decay |
| Discovery | 2001 |
| Mass excess | 108,300 ±22.16 keV |
| Binding energy | 7,341 ±0.0846 keV |
| Single-particle energy | 3,228 ±112 keV |
| Neutron separation energy | 7,707 ±28.85 keV |
| Q value for electron capture | 2,116 ±144.7 keV |
| β⁻ decay energy | -5,884 ±95.67 keV |
| β⁻ decay energy with neutron | -12,790 ±181.1 keV |
263SgSeaborgium-263
| Classification | z: 106; n: 157; m: 263 |
|---|---|
| Half life | 1 ±2 s |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission |
| Discovery | 1974 |
| Mass excess | 110,100 ±95 keV |
| Binding energy | 7,337 keV |
| Single-particle energy | 3,347 ±171 keV |
| Neutron separation energy | 6,245 ±97 keV |
| Q value for electron capture | 3,085 ±193 keV |
| β⁻ decay energy | -4,301 ±320 keV |
| β⁻ decay energy with neutron | -12,130 ±133 keV |
264SgSeaborgium-264
| Classification | z: 106; n: 158; m: 264 |
|---|---|
| Half life | 37 ± ms |
| Natural abundance | synthetic nuclide |
| Spin/parity | 0+ |
| Decay modes | spontaneous fission; α decay |
| Discovery | 2006 |
| Mass excess | 110,700 ±283 keV |
| Binding energy | 7,338 ±1 keV |
| Single-particle energy | 3,616 ±329 keV |
| Neutron separation energy | 7,484 ±298 keV |
| β⁻ decay energy | -5,175 ±334 keV |
| β⁻ decay energy with neutron | -11,790 ±416 keV |
265SgSeaborgium-265
| Classification | z: 106; n: 159; m: 265 |
|---|---|
| Half life | 14.4 ± s |
| Natural abundance | synthetic nuclide |
| Decay modes | spontaneous fission; α decay |
| Discovery | 1994 |
| Mass excess | 112,700 ±139 keV |
| Binding energy | 7,333 ±1 keV |
| Single-particle energy | 3,757 ±274 keV |
| Neutron separation energy | 6,060 ±315 keV |
| β⁻ decay energy | -3,601 ±277 keV |
| β⁻ decay energy with neutron | -11,240 ±225 keV |
266SgSeaborgium-266
| Classification | z: 106; n: 160; m: 266 |
|---|---|
| Half life | 0.34 ± s |
| Natural abundance | synthetic nuclide |
| Spin/parity | 0+ |
| Decay modes | spontaneous fission; α decay |
| Discovery | 2006 |
| Mass excess | 113,600 ±245 keV |
| Binding energy | 7,332 ±1 keV |
| Single-particle energy | 4,054 ±332 keV |
| Neutron separation energy | 7,248 ±282 keV |
| Q value for electron capture | 877 ±374.3 keV |
| β⁻ decay energy | -4,487 ±294 keV |
| β⁻ decay energy with neutron | -10,850 ±342 keV |
267SgSeaborgium-267
| Classification | z: 106; n: 161; m: 267 |
|---|---|
| Half life | 84 ± s |
| Natural abundance | synthetic nuclide |
| Decay modes | spontaneous fission; α decay |
| Discovery | 2008 |
| Mass excess | 115,800 ±261 keV |
| Binding energy | 7,327 ±1 keV |
| Single-particle energy | 4,223 ±385 keV |
| Neutron separation energy | 5,882 ±358 keV |
| β⁻ decay energy | -2,958 ±371 keV |
| β⁻ decay energy with neutron | -10,370 ±308 keV |
269SgSeaborgium-269
| Classification | z: 106; n: 163; m: 269 |
|---|---|
| Half life | 130 ± s |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission |
| Discovery | 2010 |
| Mass excess | 119,600 ±368 keV |
| Binding energy | 7,318 ±1 keV |
| Single-particle energy | 4,656 ±645 keV |
| Neutron separation energy | 5,179 ±596 keV |
| β⁻ decay energy | -1,785 ±525 keV |
| β⁻ decay energy with neutron | -9,086 ±530 keV |
271SgSeaborgium-271
| Classification | z: 106; n: 165; m: 271 |
|---|---|
| Half life | 96 ± s |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission |
| Discovery | 2004 |
| Mass excess | 124,600 ±591 keV |
| Binding energy | 7,305 ±2 keV |
| Single-particle energy | 5,069 ±824 keV |
| Neutron separation energy | 4,885 ±748 keV |
| β⁻ decay energy | -1,242 ±705 keV |
| β⁻ decay energy with neutron | -7,684 ±662 keV |