Isotopes of Bohrium
List of known isotopes of the element Bohrium.
| Isotope | t½ | % | Spin/parity | Radius | Isotopic mass | Discovery |
|---|---|---|---|---|---|---|
| 260Bh | 35 ± ms | syn. | — | — | 2.601·108 ±211 keV/c2 | 2008 |
| 261Bh | 12 ± ms | syn. | — | — | 2.611·108 ±193 keV/c2 | 1989 |
| 262Bh | 102 ±26 ms | syn. | — | — | 2.621·108 ±99.91 keV/c2 | 1981 |
| 263Bh | stab. | syn. | — | — | 2.631·108 ±328 keV/c2 | — |
| 264Bh | 0.44 ± s | syn. | — | — | 2.641·108 ±190 keV/c2 | 1995 |
| 265Bh | stab. | syn. | — | — | 2.651·108 ±257 keV/c2 | 2004 |
| 266Bh | 2.1 ± s | syn. | — | — | 2.661·108 ±175 keV/c2 | 2000 |
| 267Bh | 14 ± s | syn. | — | — | 2.671·108 ±282 keV/c2 | 2000 |
| 270Bh | 1 ± m | syn. | — | — | 2.701·108 ±320 keV/c2 | 2007 |
| 271Bh | 1.5 ± s | syn. | — | — | 2.711·108 ±412 keV/c2 | 2013 |
| 272Bh | 10.5 ± s | syn. | — | — | 2.721·108 ±571 keV/c2 | 2004 |
| 274Bh | 44 ± s | syn. | — | — | 2.741·108 ±620 keV/c2 | 2010 |
| 278Bh | 19 ± m | syn. | — | — | 2.781·108 ±429 keV/c2 | 2016 |
260BhBohrium-260
| Classification | z: 107; n: 153; m: 260 |
|---|---|
| Half life | 35 ± ms |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission; electron capture (EC) |
| Discovery | 2008 |
| Mass excess | 113,100 ±196 keV |
| Binding energy | 7,314 ±1 keV |
| Single-particle energy | 685 ±267 keV |
| Q value for electron capture | 6,575 ±197 keV |
261BhBohrium-261
| Classification | z: 107; n: 154; m: 261 |
|---|---|
| Half life | 12 ± ms |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission |
| Discovery | 1989 |
| Mass excess | 113,000 ±179.8 keV |
| Binding energy | 7,317 ±0.6889 keV |
| Single-particle energy | 757 ±180.9 keV |
| Neutron separation energy | 8,115 ±266 keV |
| Q value for electron capture | 5,074 ±180.7 keV |
262BhBohrium-262
| Classification | z: 107; n: 155; m: 262 |
|---|---|
| Half life | 102 ±26 ms |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay |
| Discovery | 1981 |
| Mass excess | 114,200 ±93.07 keV |
| Binding energy | 7,315 ±0.3552 keV |
| Single-particle energy | 1,041 ±94.89 keV |
| Neutron separation energy | 6,898 ±202.4 keV |
| Q value for electron capture | 5,883 ±95.67 keV |
263BhBohrium-263
| Classification | z: 107; n: 156; m: 263 |
|---|---|
| Half life | stable nuclide |
| Natural abundance | synthetic nuclide |
| Mass excess | 114,400 ±305 keV |
| Binding energy | 7,318 ±1 keV |
| Single-particle energy | 1,162 ±306 keV |
| Neutron separation energy | 7,827 ±319 keV |
| Q value for electron capture | 4,301 ±319.4 keV |
| β⁻ decay energy | -5,182 ±363 keV |
264BhBohrium-264
| Classification | z: 107; n: 157; m: 264 |
|---|---|
| Half life | 0.44 ± s |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay |
| Discovery | 1995 |
| Mass excess | 115,900 ±177 keV |
| Binding energy | 7,315 ±1 keV |
| Single-particle energy | 1,526 ±201 keV |
| Neutron separation energy | 6,610 ±353 keV |
| Q value for electron capture | 5,175 ±333.7 keV |
| β⁻ decay energy | -3,605 ±180 keV |
| β⁻ decay energy with neutron | -11,800 ±265 keV |
265BhBohrium-265
| Classification | z: 107; n: 158; m: 265 |
|---|---|
| Half life | stable nuclide |
| Natural abundance | synthetic nuclide |
| Discovery | 2004 |
| Mass excess | 116,300 ±239 keV |
| Binding energy | 7,316 ±1 keV |
| Single-particle energy | 1,677 ±370 keV |
| Neutron separation energy | 7,634 ±298 keV |
| Q value for electron capture | 3,601 ±276.4 keV |
| β⁻ decay energy | -4,505 ±240 keV |
| β⁻ decay energy with neutron | -11,240 ±241 keV |
266BhBohrium-266
| Classification | z: 107; n: 159; m: 266 |
|---|---|
| Half life | 2.1 ± s |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission |
| Discovery | 2000 |
| Mass excess | 118,100 ±163 keV |
| Binding energy | 7,313 ±1 keV |
| Single-particle energy | 1,979 ±214 keV |
| Neutron separation energy | 6,362 ±289 keV |
| Q value for electron capture | 4,487 ±294.2 keV |
| β⁻ decay energy | -3,036 ±165 keV |
| β⁻ decay energy with neutron | -10,870 ±164 keV |
267BhBohrium-267
| Classification | z: 107; n: 160; m: 267 |
|---|---|
| Half life | 14 ± s |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission |
| Discovery | 2000 |
| Mass excess | 118,700 ±263 keV |
| Binding energy | 7,313 ±1 keV |
| Single-particle energy | 2,141 ±359 keV |
| Neutron separation energy | 7,411 ±309 keV |
| β⁻ decay energy | -3,893 ±279 keV |
| β⁻ decay energy with neutron | -10,450 ±264 keV |
270BhBohrium-270
| Classification | z: 107; n: 163; m: 270 |
|---|---|
| Half life | 1 ± m |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission |
| Discovery | 2007 |
| Mass excess | 124,200 ±299 keV |
| Binding energy | 7,301 ±1 keV |
| Single-particle energy | 2,752 ±474 keV |
| Neutron separation energy | 5,319 ±479 keV |
| β⁻ decay energy | -882 ±388 keV |
| β⁻ decay energy with neutron | -8,335 ±326 keV |
271BhBohrium-271
| Classification | z: 107; n: 164; m: 271 |
|---|---|
| Half life | 1.5 ± s |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission |
| Discovery | 2013 |
| Mass excess | 125,800 ±384 keV |
| Binding energy | 7,298 ±1 keV |
| Single-particle energy | 2,861 ±598 keV |
| Neutron separation energy | 6,442 ±486 keV |
| Q value for electron capture | 1,242 ±704.7 keV |
| β⁻ decay energy | -1,832 ±473 keV |
| β⁻ decay energy with neutron | -7,325 ±457 keV |
272BhBohrium-272
| Classification | z: 107; n: 165; m: 272 |
|---|---|
| Half life | 10.5 ± s |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay |
| Discovery | 2004 |
| Mass excess | 128,700 ±532 keV |
| Binding energy | 7,290 ±2 keV |
| Single-particle energy | 3,119 ±795 keV |
| Neutron separation energy | 5,143 ±656 keV |
| β⁻ decay energy | -217 ±737 keV |
| β⁻ decay energy with neutron | -6,975 ±599 keV |
274BhBohrium-274
| Classification | z: 107; n: 167; m: 274 |
|---|---|
| Half life | 44 ± s |
| Natural abundance | synthetic nuclide |
| Decay modes | α decay; spontaneous fission |
| Discovery | 2010 |
| Mass excess | 133,700 ±578 keV |
| Binding energy | 7,278 ±2 keV |
| Single-particle energy | 3,447 ±703 keV |
| Neutron separation energy | 4,993 ±873 keV |
| β⁻ decay energy | 356 ±744 keV |
| β⁻ decay energy with neutron | -6,077 ±688 keV |
278BhBohrium-278
| Classification | z: 107; n: 171; m: 278 |
|---|---|
| Half life | 19 ± m |
| Natural abundance | synthetic nuclide |
| Decay modes | spontaneous fission; α decay |
| Discovery | 2016 |
| Mass excess | 144,300 ±400 keV |
| Binding energy | 7,251 ±1 keV |
| Neutron separation energy | 4,801 ±721 keV |
| β⁻ decay energy | 1,150 ±500 keV |
| β⁻ decay energy with neutron | -5,076 ±599 keV |