Table
| nuclide symbol |
Z(p) | N(n) | isotopic mass (u) |
half-life | decay mode(s) |
daughter isotope(s) |
nuclear spin |
|---|---|---|---|---|---|---|---|
| excitation energy | |||||||
| 256Db | 105 | 151 | 256.10813(31)# | 1.9(4) s |
α (~64%) | 252Lr | |
| SF (~0.02%) | (various) | ||||||
| β+ (~36%) | 256Rf | ||||||
| 257Db | 105 | 152 | 257.10772(24)# | 1.53(17) s |
α (82%) | 253Lr | (9/2+) |
| SF (17%) | (various) | ||||||
| β+ (1%) | 257Rf | ||||||
| 257mDb | 100(100)# keV | 790(130) ms |
(1/2-) | ||||
| 258Db | 105 | 153 | 258.10923(37)# | 4.5(6) s | α (64%) | 254Lr | |
| β+ (36%) | 258Rf | ||||||
| SF (1%) | (various) | ||||||
| 258mDb | 60(100)# keV | 20(10) s | EC | 258Rf | |||
| IT (rare) | 258Db | ||||||
| 259Db | 105 | 154 | 259.10961(23)# | 0.51(16) s | α | 255Lr | |
| 260Db | 105 | 155 | 260.11130(25)# | 1.52(13) s | α (88%) | 256Lr | |
| SF (9.6%) | (various) | ||||||
| β+ (2%) | 260Rf | ||||||
| 260mDb | 19 s | ||||||
| 261Db | 105 | 156 | 261.11206(25)# | 1.8(4) s | SF (50%) | (various) | |
| α (50%) | 257Lr | ||||||
| 262Db | 105 | 157 | 262.11408(20)# | 35(5) s | SF (71%) | (various) | |
| α (26%) | 258Lr | ||||||
| β+ (3%) | 262Rf | ||||||
| 263Db | 105 | 158 | 263.11499(18)# | 29(9) s |
SF (50%) | (various) | |
| α (42%) | 259Lr | ||||||
| β+ (8%) | 263Rf | ||||||
| 266Db | 105 | 161 | 266.12103(39)# | 22 min | SF | (various) | |
| EC | 266Rf | ||||||
| 267Db | 105 | 162 | 267.12238(50)# | 73(+350-33) min | SF | (various) | |
| 268Db | 105 | 163 | 268.12545(57)# | 32(+11-7) h | SF | (various) | |
| EC | 268Rf | ||||||
| 270Db | 105 | 165 | 270.13071(77)# | 23.15 h | SF | (various) | |
Read more about this topic: Isotopes Of Dubnium
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