銣的同位素
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） |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 71Rb | 37 | 34 | 70.96532(54)# |  | p | 70Kr | 5/2−# |  |  |
| 72Rb | 37 | 35 | 71.95908(54)# | <1.5 µs | p | 71Kr | 3+# |  |  |
| 72mRb | 100(100)# keV | 100(100)# keV | 100(100)# keV | 1# µs | p | 71Kr | 1−# |  |  |
| 73Rb | 37 | 36 | 72.95056(16)# | <30 ns | p | 72Kr | 3/2−# |  |  |
| 74Rb | 37 | 37 | 73.944265(4) | 64.76(3) ms | β+ | 74Kr | (0+) |  |  |
| 75Rb | 37 | 38 | 74.938570(8) | 19.0(12) s | β+ | 75Kr | (3/2−) |  |  |
| 76Rb | 37 | 39 | 75.9350722(20) | 36.5(6) s | β+ | 76Kr | 1(−) |  |  |
| 76Rb | 37 | 39 | 75.9350722(20) | 36.5(6) s | β+, α (3.8×10−7%) | 72Se | 1(−) |  |  |
| 76mRb | 316.93(8) keV | 316.93(8) keV | 316.93(8) keV | 3.050(7) µs |  |  | (4+) |  |  |
| 77Rb | 37 | 40 | 76.930408(8) | 3.77(4) min | β+ | 77Kr | 3/2− |  |  |
| 78Rb | 37 | 41 | 77.928141(8) | 17.66(8) min | β+ | 78Kr | 0(+) |  |  |
| 78mRb | 111.20(10) keV | 111.20(10) keV | 111.20(10) keV | 5.74(5) min | β+ (90%) | 78Kr | 4(−) |  |  |
| 78mRb | 111.20(10) keV | 111.20(10) keV | 111.20(10) keV | 5.74(5) min | IT (10%) | 78Rb | 4(−) |  |  |
| 79Rb | 37 | 42 | 78.923989(6) | 22.9(5) min | β+ | 79Kr | 5/2+ |  |  |
| 80Rb | 37 | 43 | 79.922519(7) | 33.4(7) s | β+ | 80Kr | 1+ |  |  |
| 80mRb | 494.4(5) keV | 494.4(5) keV | 494.4(5) keV | 1.6(2) µs |  |  | 6+ |  |  |
| 81Rb | 37 | 44 | 80.918996(6) | 4.570(4) h | β+ | 81Kr | 3/2− |  |  |
| 81mRb | 86.31(7) keV | 86.31(7) keV | 86.31(7) keV | 30.5(3) min | IT (97.6%) | 81Rb | 9/2+ |  |  |
| 81mRb | 86.31(7) keV | 86.31(7) keV | 86.31(7) keV | 30.5(3) min | β+ (2.4%) | 81Kr | 9/2+ |  |  |
| 82Rb | 37 | 45 | 81.9182086(30) | 1.273(2) min | β+ | 82Kr | 1+ |  |  |
| 82mRb | 69.0(15) keV | 69.0(15) keV | 69.0(15) keV | 6.472(5) h | β+ (99.67%) | 82Kr | 5− |  |  |
| 82mRb | 69.0(15) keV | 69.0(15) keV | 69.0(15) keV | 6.472(5) h | IT (.33%) | 82Rb | 5− |  |  |
| 83Rb | 37 | 46 | 82.915110(6) | 86.2(1) d | ε | 83Kr | 5/2− |  |  |
| 83mRb | 42.11(4) keV | 42.11(4) keV | 42.11(4) keV | 7.8(7) ms | IT | 83Rb | 9/2+ |  |  |
| 84Rb | 37 | 47 | 83.914385(3) | 33.1(1) d | β+ (96.2%) | 84Kr | 2− |  |  |
| 84Rb | 37 | 47 | 83.914385(3) | 33.1(1) d | β− (3.8%) | 84Sr | 2− |  |  |
| 84mRb | 463.62(9) keV | 463.62(9) keV | 463.62(9) keV | 20.26(4) min | IT (>99.9%) | 84Rb | 6− |  |  |
| 84mRb | 463.62(9) keV | 463.62(9) keV | 463.62(9) keV | 20.26(4) min | β+ (<.1%) | 84Kr | 6− |  |  |
| 85Rb | 37 | 48 | 84.911789738(12) | 稳定 | 稳定 | 稳定 | 5/2− | 0.7217(2) |  |
| 86Rb | 37 | 49 | 85.91116742(21) | 18.642(18) d | β− (99.9948%) | 86Sr | 2− |  |  |
| 86Rb | 37 | 49 | 85.91116742(21) | 18.642(18) d | ε (.0052%) | 86Kr | 2− |  |  |
| 86mRb | 556.05(18) keV | 556.05(18) keV | 556.05(18) keV | 1.017(3) min | IT | 86Rb | 6− |  |  |
| 87Rb | 37 | 50 | 86.909180527(13) | 4.923(22)×1010 y | β− | 87Sr | 3/2− | 0.2783(2) |  |
| 88Rb | 37 | 51 | 87.91131559(17) | 17.773(11) min | β− | 88Sr | 2− |  |  |
| 89Rb | 37 | 52 | 88.912278(6) | 15.15(12) min | β− | 89Sr | 3/2− |  |  |
| 90Rb | 37 | 53 | 89.914802(7) | 158(5) s | β− | 90Sr | 0− |  |  |
| 90mRb | 106.90(3) keV | 106.90(3) keV | 106.90(3) keV | 258(4) s | β− (97.4%) | 90Sr | 3− |  |  |
| 90mRb | 106.90(3) keV | 106.90(3) keV | 106.90(3) keV | 258(4) s | IT (2.6%) | 90Rb | 3− |  |  |
| 91Rb | 37 | 54 | 90.916537(9) | 58.4(4) s | β− | 91Sr | 3/2(−) |  |  |
| 92Rb | 37 | 55 | 91.919729(7) | 4.492(20) s | β− (99.98%) | 92Sr | 0− |  |  |
| 92Rb | 37 | 55 | 91.919729(7) | 4.492(20) s | β−, n (.0107%) | 91Sr | 0− |  |  |
| 93Rb | 37 | 56 | 92.922042(8) | 5.84(2) s | β− (98.65%) | 93Sr | 5/2− |  |  |
| 93Rb | 37 | 56 | 92.922042(8) | 5.84(2) s | β−, n (1.35%) | 92Sr | 5/2− |  |  |
| 93mRb | 253.38(3) keV | 253.38(3) keV | 253.38(3) keV | 57(15) µs |  |  | (3/2−,5/2−) |  |  |
| 94Rb | 37 | 57 | 93.926405(9) | 2.702(5) s | β− (89.99%) | 94Sr | 3(−) |  |  |
| 94Rb | 37 | 57 | 93.926405(9) | 2.702(5) s | β−, n (10.01%) | 93Sr | 3(−) |  |  |
| 95Rb | 37 | 58 | 94.929303(23) | 377.5(8) ms | β− (91.27%) | 95Sr | 5/2− |  |  |
| 95Rb | 37 | 58 | 94.929303(23) | 377.5(8) ms | β−, n (8.73%) | 94Sr | 5/2− |  |  |
| 96Rb | 37 | 59 | 95.93427(3) | 202.8(33) ms | β− (86.6%) | 96Sr | 2+ |  |  |
| 96Rb | 37 | 59 | 95.93427(3) | 202.8(33) ms | β−, n (13.4%) | 95Sr | 2+ |  |  |
| 96mRb | 0(200)# keV | 0(200)# keV | 0(200)# keV | 200# ms [>1 ms] | β− | 96Sr | 1(−#) |  |  |
| 96mRb | 0(200)# keV | 0(200)# keV | 0(200)# keV | 200# ms [>1 ms] | IT | 96Rb | 1(−#) |  |  |
| 96mRb | 0(200)# keV | 0(200)# keV | 0(200)# keV | 200# ms [>1 ms] | β−, n | 95Sr | 1(−#) |  |  |
| 97Rb | 37 | 60 | 96.93735(3) | 169.9(7) ms | β− (74.3%) | 97Sr | 3/2+ |  |  |
| 97Rb | 37 | 60 | 96.93735(3) | 169.9(7) ms | β−, n (25.7%) | 96Sr | 3/2+ |  |  |
| 98Rb | 37 | 61 | 97.94179(5) | 114(5) ms | β−(86.14%) | 98Sr | (0,1)(−#) |  |  |
| 98Rb | 37 | 61 | 97.94179(5) | 114(5) ms | β−, n (13.8%) | 97Sr | (0,1)(−#) |  |  |
| 98Rb | 37 | 61 | 97.94179(5) | 114(5) ms | β−, 2n (.051%) | 96Sr | (0,1)(−#) |  |  |
| 98mRb | 290(130) keV | 290(130) keV | 290(130) keV | 96(3) ms | β− | 97Sr | (3,4)(+#) |  |  |
| 99Rb | 37 | 62 | 98.94538(13) | 50.3(7) ms | β− (84.1%) | 99Sr | (5/2+) |  |  |
| 99Rb | 37 | 62 | 98.94538(13) | 50.3(7) ms | β−, n (15.9%) | 98Sr | (5/2+) |  |  |
| 100Rb | 37 | 63 | 99.94987(32)# | 51(8) ms | β− (94.25%) | 100Sr | (3+) |  |  |
| 100Rb | 37 | 63 | 99.94987(32)# | 51(8) ms | β−, n (5.6%) | 99Sr | (3+) |  |  |
| 100Rb | 37 | 63 | 99.94987(32)# | 51(8) ms | β−, 2n (.15%) | 98Sr | (3+) |  |  |
| 101Rb | 37 | 64 | 100.95320(18) | 32(5) ms | β− (69%) | 101Sr | (3/2+)# |  |  |
| 101Rb | 37 | 64 | 100.95320(18) | 32(5) ms | β−, n (31%) | 100Sr | (3/2+)# |  |  |
| 102Rb | 37 | 65 | 101.95887(54)# | 37(5) ms | β− (82%) | 102Sr |  |  |  |
| 102Rb | 37 | 65 | 101.95887(54)# | 37(5) ms | β−, n (18%) | 101Sr |  |  |  |
1 2 3 4  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。
↑  半衰期超过5亿年的同位素以粗體表示。
↑  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。
1 2  核裂变产物
↑  原始（英语：）放射性同位素
↑  用於銣鍶定年（英语：）
| 0 | 1 | 2 |
| --- | --- | --- |

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