鎵的同位素
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） |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 56Ga | 31 | 25 | 55.99491(28)# |  | p | 55Zn | 3+# |  |
| 57Ga | 31 | 26 | 56.98293(28)# |  | p | 56Zn | 1/2−# |  |
| 58Ga | 31 | 27 | 57.97425(23)# |  | p | 57Zn | 2+# |  |
| 59Ga | 31 | 28 | 58.96337(18)# |  | p | 58Zn | 3/2−# |  |
| 60Ga | 31 | 29 | 59.95706(12)# | 70(10) ms | β+ | 60Zn | (2+) |  |
| 61Ga | 31 | 30 | 60.94945(6) | 168(3) ms | β+ | 61Zn | 3/2− |  |
| 62Ga | 31 | 31 | 61.944175(30) | 116.18(4) ms | β+ | 62Zn | 0+ |  |
| 63Ga | 31 | 32 | 62.9392942(14) | 32.4(5) s | β+ | 63Zn | (3/2−) |  |
| 64Ga | 31 | 33 | 63.9368387(22) | 2.627(12) min | β+ | 64Zn | 0(+#) |  |
| 64mGa | 42.85(8) keV | 42.85(8) keV | 42.85(8) keV | 21.9(7) µs |  |  | 2+ |  |
| 65Ga | 31 | 34 | 64.9327348(9) | 15.2(2) min | β+ | 65Zn | 3/2− |  |
| 66Ga | 31 | 35 | 65.931589(3) | 9.49(7) h | β+ | 66Zn | 0+ |  |
| 67Ga | 31 | 36 | 66.9282017(14) | 3.2612(6) d | ε | 67Zn | 3/2− |  |
| 68Ga | 31 | 37 | 67.9279801(16) | 67.783(27) min | β+ | 68Zn | 1+ |  |
| 69Ga | 31 | 38 | 68.9255736(13) | 稳定 | 稳定 | 稳定 | 3/2− | 0.60108(50) |
| 70Ga | 31 | 39 | 69.9260220(13) | 21.14(3) min | β− (99.59) | 70Ge | 1+ |  |
| 70Ga | 31 | 39 | 69.9260220(13) | 21.14(3) min | ε (0.41%) | 70Zn | 1+ |  |
| 71Ga | 31 | 40 | 70.9247013(11) | 稳定 | 稳定 | 稳定 | 3/2− | 0.39892(50) |
| 72Ga | 31 | 41 | 71.9263663(11) | 14.095(3) h | β− | 72Ge | 3- |  |
| 72mGa | 119.66(5) keV | 119.66(5) keV | 119.66(5) keV | 39.68(13) ms | IT | 72Ga | (0+) |  |
| 73Ga | 31 | 42 | 72.9251747(18) | 4.86(3) h | β− | 73Ge | 3/2− |  |
| 74Ga | 31 | 43 | 73.926946(4) | 8.12(12) min | β− | 74Ge | (3-) |  |
| 74mGa | 59.571(14) keV | 59.571(14) keV | 59.571(14) keV | 9.5(10) s |  |  | (0) |  |
| 75Ga | 31 | 44 | 74.9265002(26) | 126(2) s | β− | 75Ge | (3/2)− |  |
| 76Ga | 31 | 45 | 75.9288276(21) | 32.6(6) s | β− | 76Ge | (2+,3+) |  |
| 77Ga | 31 | 46 | 76.9291543(26) | 13.2(2) s | β− | 77Ge | (3/2−) |  |
| 78Ga | 31 | 47 | 77.9316082(26) | 5.09(5) s | β− | 78Ge | (3+) |  |
| 79Ga | 31 | 48 | 78.93289(11) | 2.847(3) s | β− (99.911%) | 79mGe | (3/2−)# |  |
| 79Ga | 31 | 48 | 78.93289(11) | 2.847(3) s | β−, n (.089%) | 78Ge | (3/2−)# |  |
| 80Ga | 31 | 49 | 79.93652(13) | 1.697(11) s | β− (99.11%) | 80Ge | (3) |  |
| 80Ga | 31 | 49 | 79.93652(13) | 1.697(11) s | β−, n (.89%) | 79Ge | (3) |  |
| 81Ga | 31 | 50 | 80.93775(21) | 1.217(5) s | β− (88.11%) | 81mGe | (5/2−) |  |
| 81Ga | 31 | 50 | 80.93775(21) | 1.217(5) s | β−, n (11.89%) | 80Ge | (5/2−) |  |
| 82Ga | 31 | 51 | 81.94299(32)# | 0.599(2) s | β− (78.5%) | 82Ge | (1,2,3) |  |
| 82Ga | 31 | 51 | 81.94299(32)# | 0.599(2) s | β−, n (21.5%) | 81Ge | (1,2,3) |  |
| 83Ga | 31 | 52 | 82.94698(32)# | 308(1) ms | β− (60%) | 83Ge | 3/2−# |  |
| 83Ga | 31 | 52 | 82.94698(32)# | 308(1) ms | β−, n (40%) | 82Ge | 3/2−# |  |
| 84Ga | 31 | 53 | 83.95265(43)# | 0.085(10) s | β−, n (70%) | 83Ge |  |  |
| 84Ga | 31 | 53 | 83.95265(43)# | 0.085(10) s | β− (30%) | 84Ge |  |  |
| 85Ga | 31 | 54 | 84.95700(54)# | 50# ms [>300 ns] |  |  | 3/2−# |  |
| 86Ga | 31 | 55 | 85.96312(86)# | 30# ms [>300 ns] |  |  |  |  |
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。
↑   Deexcitation gamma used in medical imaging
↑  Medically useful radioisotope
| 0 | 1 | 2 |
| --- | --- | --- |

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