| Simb | % natural | Massa | Meia-vida | Decaimento |
| 255Db | 0 | 255,1074 | 1,6 s | α p/ 251Lr FE |
| 256Db | 0 | 256,1081 | 2,6 s | α p/ 252Lr FE CE p/ 256Rf |
| 257Db | 0 | 257,1079 | 1,5 s | α p/ 253Lr FE CE p/ 257Rf |
| 258Db | 0 | 258,1093 | 4,2 s | α p/ 254Lr FE CE p/ 258Rf |
| 259Db | 0 | 259,1097 | 1,2 s | α p/ 255Lr |
| 260Db | 0 | 260,1114 | 1,5 s | α p/ 256Lr FE CE p/ 260Rf |
| 261Db | 0 | 261,1121 | 1,8 s | α p/ 257Lr FE |
| 262Db | 0 | 262,1138 | 34 s | α p/ 258Lr FE CE p/ 262Rf |
| 263Db | 0 | 263,1153 | 30 s | α p/ 259Lr FE |