溴的同位素
圖表

| 符號 | Z> 激發能量 | N> 激發能量 | 同位素質量（u） > 激發能量 | 半衰期 | 衰變方式 | 衰變產物 | 原子核 自旋 | 相對豐度 （莫耳分率） | 相對豐度 的變化量 （莫耳分率） |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 68Br | 35 | 33 | 67.95836(28)# | ~50 ns | p | 67Se | 3+# |  |  |
| 69Br | 35 | 34 | 68.95011(11)# | <24 ns | p | 68Se | 1/2−# |  |  |
| 70Br | 35 | 35 | 69.94479(33)# | 79.1(8) ms | β+ | 70Se | 0+# |  |  |
| 70mBr | 2292.2(8) keV | 2292.2(8) keV | 2292.2(8) keV | 2.2(2) s | β+ | 70Se | (9+) |  |  |
| 70mBr | 2292.2(8) keV | 2292.2(8) keV | 2292.2(8) keV | 2.2(2) s | IT | 70Br | (9+) |  |  |
| 71Br | 35 | 36 | 70.93874(61) | 21.4(6) s | β+ | 71Se | (5/2)− |  |  |
| 72Br | 35 | 37 | 71.93664(6) | 78.6(24) s | β+ | 72Se | 1+ |  |  |
| 72mBr | 100.92(3) keV | 100.92(3) keV | 100.92(3) keV | 10.6(3) s | IT (>99.9%) | 72Br | 1− |  |  |
| 72mBr | 100.92(3) keV | 100.92(3) keV | 100.92(3) keV | 10.6(3) s | β+ (<0.1%) | 72Se | 1− |  |  |
| 73Br | 35 | 38 | 72.93169(5) | 3.4(2) min | β+ | 73Se | 1/2− |  |  |
| 74Br | 35 | 39 | 73.929891(16) | 25.4(3) min | β+ | 74Se | (0−) |  |  |
| 74mBr | 13.58(21) keV | 13.58(21) keV | 13.58(21) keV | 46(2) min | β+ | 74Se | 4(+#) |  |  |
| 75Br | 35 | 40 | 74.925776(15) | 96.7(13) min | β+ | 75Se | 3/2− |  |  |
| 76Br | 35 | 41 | 75.924541(10) | 16.2(2) h | β+ | 76Se | 1− |  |  |
| 76mBr | 102.58(3) keV | 102.58(3) keV | 102.58(3) keV | 1.31(2) s | IT (99.4%) | 76Br | (4)+ |  |  |
| 76mBr | 102.58(3) keV | 102.58(3) keV | 102.58(3) keV | 1.31(2) s | β+ (0.6%) | 76Se | (4)+ |  |  |
| 77Br | 35 | 42 | 76.921379(3) | 57.036(6) h | β+ | 77Se | 3/2− |  |  |
| 77mBr | 105.86(8) keV | 105.86(8) keV | 105.86(8) keV | 4.28(10) min | IT | 77Br | 9/2+ |  |  |
| 78Br | 35 | 43 | 77.921146(4) | 6.46(4) min | β+ (99.99%) | 78Se | 1+ |  |  |
| 78Br | 35 | 43 | 77.921146(4) | 6.46(4) min | β− (0.01%) | 78Kr | 1+ |  |  |
| 78mBr | 180.82(13) keV | 180.82(13) keV | 180.82(13) keV | 119.2(10) µs |  |  | (4+) |  |  |
| 79Br | 35 | 44 | 78.9183371(22) | 稳定 | 稳定 | 稳定 | 3/2− | 0.5069(7) |  |
| 79mBr | 207.61(9) keV | 207.61(9) keV | 207.61(9) keV | 4.86(4) s | IT | 79Br | (9/2+) |  |  |
| 80Br | 35 | 45 | 79.9185293(22) | 17.68(2) min | β− (91.7%) | 80Kr | 1+ |  |  |
| 80Br | 35 | 45 | 79.9185293(22) | 17.68(2) min | β+ (8.3%) | 80Se | 1+ |  |  |
| 80mBr | 85.843(4) keV | 85.843(4) keV | 85.843(4) keV | 4.4205(8) h | IT | 80Br | 5− |  |  |
| 81Br | 35 | 46 | 80.9162906(21) | 稳定 | 稳定 | 稳定 | 3/2− | 0.4931(7) |  |
| 81mBr | 536.20(9) keV | 536.20(9) keV | 536.20(9) keV | 34.6(28) µs |  |  | 9/2+ |  |  |
| 82Br | 35 | 47 | 81.9168041(21) | 35.282(7) h | β− | 82Kr | 5− |  |  |
| 82mBr | 45.9492(10) keV | 45.9492(10) keV | 45.9492(10) keV | 6.13(5) min | IT | 82Br | 2− |  |  |
| 82mBr | 45.9492(10) keV | 45.9492(10) keV | 45.9492(10) keV | 6.13(5) min | β− | 82Kr | 2− |  |  |
| 83Br | 35 | 48 | 82.915180(5) | 2.40(2) h | β− | 83Kr | 3/2− |  |  |
| 83mBr | 3068.8(6) keV | 3068.8(6) keV | 3068.8(6) keV | 700(100) ns |  |  | (19/2−) |  |  |
| 84Br | 35 | 49 | 83.916479(16) | 31.80(8) min | β− | 84Kr | 2− |  |  |
| 84m1Br | 320(10) keV | 320(10) keV | 320(10) keV | 6.0(2) min | β− | 84Kr | 6− |  |  |
| 84m2Br | 408.2(4) keV | 408.2(4) keV | 408.2(4) keV | <140 ns |  |  | 1+ |  |  |
| 85Br | 35 | 50 | 84.915608(21) | 2.90(6) min | β− | 85Kr | 3/2− |  |  |
| 86Br | 35 | 51 | 85.918798(12) | 55.1(4) s | β− | 86Kr | (2−) |  |  |
| 87Br | 35 | 52 | 86.920711(19) | 55.65(13) s | β− (97.48%) | 87Kr | 3/2− |  |  |
| 87Br | 35 | 52 | 86.920711(19) | 55.65(13) s | β−, n (2.52%) | 86Kr | 3/2− |  |  |
| 88Br | 35 | 53 | 87.92407(4) | 16.29(6) s | β− (93.42%) | 88Kr | (2−) |  |  |
| 88Br | 35 | 53 | 87.92407(4) | 16.29(6) s | β−, n (6.48%) | 87Kr | (2−) |  |  |
| 88mBr | 272.7(3) keV | 272.7(3) keV | 272.7(3) keV | 5.4(7) µs |  |  |  |  |  |
| 89Br | 35 | 54 | 88.92639(6) | 4.40(3) s | β− (86.2%) | 89Kr | (3/2−,5/2−) |  |  |
| 89Br | 35 | 54 | 88.92639(6) | 4.40(3) s | β−, n (13.8%) | 88Kr | (3/2−,5/2−) |  |  |
| 90Br | 35 | 55 | 89.93063(8) | 1.91(1) s | β− (74.8%) | 90Kr |  |  |  |
| 90Br | 35 | 55 | 89.93063(8) | 1.91(1) s | β−, n (25.2%) | 89Kr |  |  |  |
| 91Br | 35 | 56 | 90.93397(8) | 541(5) ms | β− (80%) | 91Kr | 3/2−# |  |  |
| 91Br | 35 | 56 | 90.93397(8) | 541(5) ms | β−, n (20%) | 90Kr | 3/2−# |  |  |
| 92Br | 35 | 57 | 91.93926(5) | 0.343(15) s | β− (66.9%) | 92Kr | (2−) |  |  |
| 92Br | 35 | 57 | 91.93926(5) | 0.343(15) s | β−, n (33.1%) | 91Kr | (2−) |  |  |
| 93Br | 35 | 58 | 92.94305(32)# | 102(10) ms | β− (89%) | 93Kr | 3/2−# |  |  |
| 93Br | 35 | 58 | 92.94305(32)# | 102(10) ms | β−, n (11%) | 92Kr | 3/2−# |  |  |
| 94Br | 35 | 59 | 93.94868(43)# | 70(20) ms | β− (70%) | 94Kr |  |  |  |
| 94Br | 35 | 59 | 93.94868(43)# | 70(20) ms | β−, n (30%) | 93Kr |  |  |  |
| 95Br | 35 | 60 | 94.95287(54)# | 50# ms [>300 ns] |  |  | 3/2−# |  |  |
| 96Br | 35 | 61 | 95.95853(75)# | 20# ms [>300 ns] |  |  |  |  |  |
| 97Br | 35 | 62 | 96.96280(86)# | 10# ms [>300 ns] |  |  | 3/2−# |  |  |
| 98Br | 35 | 63 | (98)# |  |  |  |  |  |  |
1 2 3  畫上#號的數據代表沒有經過實驗的証明，僅為理論推測。
1 2 3 4  用括號括起來的數據代表不確定性。
↑  穩定的衰變產物以粗體表示。
↑  半衰期超过5亿年的衰变产物以粗斜体表示。
| 0 | 1 | 2 |
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