Bromine Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
67Br | 66.96479 (54) |
|
|
| -32,800 (500) | 8,152 (8) | p ? |
|
68Br | 67.95852 (38) |
| <1.5 | us | -38,640 (360) | 8,237 (5) | p ? |
|
69Br | 68.95011 (11) |
| <24 | ns | -46,480 (100) | 8,348 (2) | p ? |
|
70Br | 69.94479 (33) |
| 79.1 | ms | -51,430 (310) | 8,415 (4) | B+ | 100 |
71Br | 70.93874 (61) |
| 21.4 | s | -57,060 (570) | 8,489 (8) | B+ | 100 |
72Br | 71.936645 (64) |
| 78.6 | s | -59,015 (60) | 8,510.7 (8.3) | B+ | 100 |
73Br | 72.931692 (55) |
| 3.4 | m | -63,629 (51) | 8,567.8 (7) | B+ | 100 |
74Br | 73.929891 (16) |
| 25.4 | m | -65,306 (15) | 8,583.8 (2) | B+ | 100 |
75Br | 74.925776 (15) |
| 96.7 | m | -69,139 (14) | 8,628.1 (1.9) | B+ | 100 |
76Br | 75.924541 (10) |
| 16.2 | h | -70,289.2 (9.5) | 8,635.9 (1.2) | B+ | 100 |
77Br | 76.9213791 (35) |
| 57.036 | h | -73,234.9 (3.3) | 8,666.81 (4.2) | B+ | 100 |
78Br | 77.9211457 (42) |
| 6.46 | m | -73,452.3 (3.9) | 8,661.96 (5.1) | B+~100 |
|
79Br | 78.9183371 (22) | 50.69 (7) | stable |
| -76,068.5 (2) | 8,687.60 (2.6) |
|
|
80Br | 79.9185293 (22) |
| 17.68 | m | -75,889.5 (2) | 8,677.66 (2.5) | B- | 91.7 2 |
81Br | 80.9162906 (21) | 49.31 (7) | stable |
| -77,974.8 (2) | 8,695.92 (2.4) |
|
|
82Br | 81.9168041 (21) |
| 35.282 | h | -77,496.5 (2) | 8,682.47 (2.4) | B- | 100 |
83Br | 82.9151804 (45) |
| 2.4 | h | -79,008.9 (4.2) | 8,693.33 (5.1) | B- | 100 |
84Br | 83.916479 (16) |
| 31.8 | m | -77,799 (15) | 8,671.5 (1.7) | B- | 100 |
85Br | 84.915608 (21) |
| 2.9 | m | -78,610 (19) | 8,674.0 (2.2) | B- | 100 |
86Br | 85.918798 (12) |
| 55.1 | s | -75,640 (11) | 8,632.5 (1.3) | B- | 100 |
87Br | 86.920711 (19) |
| 55.65 | s | -73,857 (18) | 8,605.5 (2) | B- | 100 |
88Br | 87.924066 (41) |
| 16.36 | s | -70,732 (38) | 8,563.9 (4.4) | B- | 100 |
89Br | 88.926385 (64) |
| 4.4 | s | -68,572 (60) | 8,534.1 (6.7) | B- | 100 |
90Br | 89.930628 (83) |
| 1.91 | s | -64,620 (77) | 8,485.1 (8.6) | B- | 100 |
91Br | 90.933968 (78) |
| 541 | ms | -61,508 (73) | 8,446.3 (8) | B- | 100 |
92Br | 91.939259 (53) |
| 343 | ms | -56,580 (50) | 8,388.7 (5.4) | B- | 100 |
93Br | 92.94305 (32) |
| 102 | ms | -53,050 (300) | 8,347 (3) | B- | 100 |
94Br | 93.94868 (43) |
| 70 | ms | -47,800 (400) | 8,289 (4) | B- | 100 |
95Br | 94.95287 (54) |
| 50 | ms | -43,900 (500) | 8,245 (5) | B- ? |
|
96Br | 95.95853 (75) |
| 20 | ms | -38,630 (700) | 8,188 (7) | B- ? |
|
97Br | 96.96280 (86) |
| 10 | ms | -34,650 (800) | 8,146 (8) | B- ? |
|
69mBr | 68.95011 (11) |
| * |
| -46,480 (100) | 8,348 (2) | 0 |
|
70mBr | 69.94479 (33) |
| 2.2 | s | -51,430 (310) | 8,415 (4) | B+ | ? |
72mBr | 71.936645 (64) |
| 10.6 | s | -59,015 (60) | 8,510.7 (8.3) | IT~100 |
|
74mBr | 73.929891 (16) |
| 46 | m | -65,306 (15) | 8,583.8 (2) | B+ | 100 |
76mBr | 75.924541 (10) |
| 1.31 | s | -70,289.2 (9.5) | 8,635.9 (1.2) | IT>99.4 |
|
77mBr | 76.9213791 (35) |
| 4.28 | m | -73,234.9 (3.3) | 8,666.81 (4.2) | IT | 100 |
78mBr | 77.9211457 (42) |
| 119.2 | us | -73,452.3 (3.9) | 8,661.96 (5.1) | 0 |
|
79mBr | 78.9183371 (22) |
| 4.86 | s | -76,068.5 (2) | 8,687.60 (2.6) | IT | 100 |
80mBr | 79.9185293 (22) |
| 4.4205 | h | -75,889.5 (2) | 8,677.66 (2.5) | IT | 100 |
81mBr | 80.9162906 (21) |
| 34.6 | us | -77,974.8 (2) | 8,695.92 (2.4) | 0 |
|
82mBr | 81.9168041 (21) |
| 6.13 | m | -77,496.5 (2) | 8,682.47 (2.4) | IT | 97.6 3 |
83mBr | 82.9151804 (45) |
| 700 | ns | -79,008.9 (4.2) | 8,693.33 (5.1) | IT | 100 |
84mBr | 83.916479 (16) |
| 6 | m | -77,799 (15) | 8,671.5 (1.7) | B- | 100 |
88mBr | 87.924066 (41) |
| 5.4 | us | -70,732 (38) | 8,563.9 (4.4) | IT | 100 |
69m1Br | 68.95011 (11) |
|
|
| -46,480 (100) | 8,348 (2) | 0 |
|
84m1Br | 83.916479 (16) |
| <140 | ns | -77,799 (15) | 8,671.5 (1.7) | IT | 100 |
Data Source: ENSDF March 2005
©Radiochemistry Society 2005