Lawrencium Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
251Lr | 251.09436 (32) |
| 150 | us | 87,900 (300) | 7,400 (1) | B+ ? |
|
252Lr | 252.09537 (27) |
| 390 | ms | 88,840 (250) | 7,399 (1) | B+ | 71# |
253Lr | 253.09521 (24) |
| 580 | ms | 88,690 (220) | 7,402 (1) | A | 90 10 |
254Lr | 254.09645 (36) |
| 13 | s | 89,850 (340) | 7,400 (1) | A | 76 11 |
255Lr | 255.09668 (22) |
| 22 | s | 90,060 (210) | 7,402 (1) | A | ? |
256Lr | 256.09863 (24) |
| 27 | s | 91,870 (220) | 7,398 (1) | A | 85 10 |
257Lr | 257.09956 (22) |
| 646 | ms | 92,740 (210) | 7,397 (1) | A~100 |
|
258Lr | 258.10181 (11) |
| 4.1 | s | 94,840 (100) | 7,391 (0) | A>95 |
|
259Lr | 259.102901 (76) |
| 6.2 | s | 95,852 (71) | 7,390 (0) | A | 78 2 |
260Lr | 260.10550 (12) |
| 3 | m | 98,280 (120) | 7,383 (0) | A | 80 20 |
261Lr | 261.10688 (22) |
| 39 | m | 99,560 (200) | 7,381 (1) | SF | ? |
262Lr | 262.10963 (22) |
| ~4 | h | 102,120 (200) | 7,374 (1) | B+ | ? |
263Lr | 263.11129 (39) |
| 5 | h | 103,670 (360) | 7,371 (1) | A ? |
|
264Lr | 264.11404 (47) |
| 10 | h | 106,230 (440) | 7,364 (2) | A ? |
|
265Lr | 265.11584 (77) |
| 10 | h | 107,900 (710) | 7,360 (3) | A ? |
|
266Lr | 266.11931 (70) |
| 1 | h | 111,130 (660) | 7,351 (2) | A ? |
|
253mLr | 253.09521 (24) |
| 1.5 | s | 88,690 (220) | 7,402 (1) | A | 90 10 |
252mLr | 252.09537 (27) |
|
|
| 88,840 (250) | 7,399 (1) | 0 |
|
254mLr | 254.09645 (36) |
|
|
| 89,850 (340) | 7,400 (1) | 0 |
|
256mLr | 256.09863 (24) |
|
|
| 91,870 (220) | 7,398 (1) | 0 | |
257mLr | 257.09956 (22) |
|
|
| 92,740 (210) | 7,397 (1) | 0 |
|
258mLr | 258.10181 (11) |
|
|
| 94,840 (100) | 7,391 (0) | 0 |
|
259mLr | 259.102901 (76) |
|
|
| 95,852 (71) | 7,390 (0) | 0 |
|
Data Source: ENSDF March 2005
©Radiochemistry Society 2005