Db
Дубній
Z 105 268,0 г/мольПерехідний метал Радіоактивний
| 255Db | 150 | 255,1069 | 99 600,0 | --- | 54,0 мс | (9/2+) | SF(67%) α→251Lr | 1976 |
| 255mDb | 150 | 255,107 | 99 700,0 | --- | 2,8 мс | (1/2-) | SF(100%) α→251Lr | 1976 |
| 256Db | 151 | 256,1077 | 100 300,0 | --- | 1,7 с | (9-) | α→252Lr(70%) β⁺→256Rf(30%) SF | 2001 |
| 257Db | 152 | 257,1075 | 100 150,0 | --- | 2,3 с | (9/2+) | α→253Lr(>94%) SF(<6%) β⁺→257Rf | 1985 |
| 257mDb | 152 | 257,1077 | 100 290,0 | --- | 670,0 мс | (1/2-) | α→253Lr(>87%) SF(<13%) β⁺→257Rf | 1985 |
| 258Db | 153 | 258,109 | 101 510,0 | --- | 2,17 с | (0-) | α→254Lr(64%) β⁺→258Rf(36%) | 1985 |
| 258mDb | 153 | 258,109 | 101 560,0 | --- | 4,41 с | (5+) | α→254Lr(77%) β⁺→258Rf(23%) SF | 1981 |
| 259Db | 154 | 259,1095 | 101 990,0 | --- | 510,0 мс | (9/2+) | α→255Lr(100%) | 2001 |
| 260Db | 155 | 260,1113 | 103 670,0 | --- | 1,52 с | --- | α→256Lr(90,4%) SF(9,6%) β⁺→260Rf | 1970 |
| 261Db | 156 | 261,112 | 104 310,0 | --- | 4,7 с | (9/2+) | SF(73%) α→257Lr(27%) | 1970 |
| 262Db | 157 | 262,1141 | 106 250,0 | --- | 34,0 с | --- | SF(52%) α→258Lr(48%) β⁺→262Rf | 1971 |
| 263Db | 158 | 263,115 | 107 110,0 | --- | 29,0 с | (9/2+) | SF(56%) α→259Lr(37%) β⁺→263Rf(6,9%) | 1992 |
| 264Db | 159 | 264,1173 | 109 260,0 | --- | 3,0 хв | --- | α→260Lr | --- |
| 265Db | 160 | 265,1185 | 110 380,0 | --- | 15,0 хв | (9/2+) | α→261Lr | --- |
| 266Db | 161 | 266,121 | 112 740,0 | --- | 1,33 год | --- | α→262Lr SF β⁺→266Rf | 2007 |
| 267Db | 162 | 267,1224 | 114 010,0 | --- | 2,0 год | (9/2+) | SF(100%) | 2004 |
| 268Db | 163 | 268,1257 | 117 060,0 | --- | 1,21 д | --- | SF(100%) β⁺→268Rf α→264Lr | 2004 |
| 269Db | 164 | 269,1279 | 119 150,0 | --- | 3,0 год | (9/2+) | α→265Lr SF | --- |
| 270Db | 165 | 270,1314 | 122 400,0 | --- | 1,7 год | --- | SF(87%) α→266Lr(13%) | 2010 |