氪的同位素
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| 標準原子質量 (Ar, 標準) |
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氪（原子量：83.798(2)）共有40個同位素，其中有5個同位素是穩定的。
圖表
| 符號 | Z（ p ） |
N（ n ） |
同位素質量（u） | 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） |
|---|---|---|---|---|---|---|---|---|---|
| 激發能量 | |||||||||
| 69Kr | 36 | 33 | 68.96518(43)# | 32(10) ms | β+ | 69Br | 5/2-# | ||
| 70Kr | 36 | 34 | 69.95526(41)# | 52(17) ms | β+ | 70Br | 0+ | ||
| 71Kr | 36 | 35 | 70.94963(70) | 100(3) ms | β+ (94.8%) | 71Br | (5/2)- | ||
| β+, p (5.2%) | 70Se | ||||||||
| 72Kr | 36 | 36 | 71.942092(9) | 17.16(18) s | β+ | 72Br | 0+ | ||
| 73Kr | 36 | 37 | 72.939289(7) | 28.6(6) s | β+ (99.32%) | 73Br | 3/2- | ||
| β+, p (.68%) | 72Se | ||||||||
| 73mKr | 433.66(12) keV | 107(10) ns | (9/2+) | ||||||
| 74Kr | 36 | 38 | 73.9330844(22) | 11.50(11) min | β+ | 74Br | 0+ | ||
| 75Kr | 36 | 39 | 74.930946(9) | 4.29(17) min | β+ | 75Br | 5/2+ | ||
| 76Kr | 36 | 40 | 75.925910(4) | 14.8(1) h | β+ | 76Br | 0+ | ||
| 77Kr | 36 | 41 | 76.9246700(21) | 74.4(6) min | β+ | 77Br | 5/2+ | ||
| 78Kr | 36 | 42 | 77.9203648(12) |
9.2 +5.5 −2.6 +1.3 −×1021 y |
双电子捕获 | 78Se | 0+ | 0.00355(3) | |
| 79Kr | 36 | 43 | 78.920082(4) | 35.04(10) h | β+ | 79Br | 1/2- | ||
| 79mKr | 129.77(5) keV | 50(3) s | 7/2+ | ||||||
| 80Kr | 36 | 44 | 79.9163790(16) | 稳定 | 0+ | 0.02286(10) | |||
| 81Kr | 36 | 45 | 80.9165920(21) | 2.29(11)×105 a | ε | 81Br | 7/2+ | trace | |
| 81mKr | 190.62(4) keV | 13.10(3) s | IT (99.975%) | 81Kr | 1/2- | ||||
| ε (.025%) | 81Br | ||||||||
| 82Kr | 36 | 46 | 81.9134836(19) | 稳定 | 0+ | 0.11593(31) | |||
| 83Kr | 36 | 47 | 82.914136(3) | 稳定 | 9/2+ | 0.11500(19) | |||
| 83m1Kr | 9.4053(8) keV | 154.4(11) ns | 7/2+ | ||||||
| 83m2Kr | 41.5569(10) keV | 1.83(2) h | IT | 83Kr | 1/2- | ||||
|
84 Kr |
36 | 48 | 83.911507(3) | 稳定 | 0+ | 0.56987(15) | |||
| 84mKr | 3236.02(18) keV | 1.89(4) µs | 8+ | ||||||
|
85 Kr |
36 | 49 | 84.9125273(21) | 10.776(3) a | β− | 85Rb | 9/2+ | trace | |
| 85m1Kr | 304.871(20) keV | 4.480(8) h | β− (78.6%) | 85Rb | 1/2- | ||||
| IT (21.4%) | 85Kr | ||||||||
| 85m2Kr | 1991.8(13) keV | 1.6(7) µs [1.2(+10-4) µs] |
(17/2+) | ||||||
| 86Kr | 36 | 50 | 85.91061073(11) | 觀測上穩定 | 0+ | 0.17279(41) | |||
| 87Kr | 36 | 51 | 86.91335486(29) | 76.3(5) min | β− | 87Rb | 5/2+ | ||
| 88Kr | 36 | 52 | 87.914447(14) | 2.84(3) h | β− | 88Rb | 0+ | ||
| 89Kr | 36 | 53 | 88.91763(6) | 3.15(4) min | β− | 89Rb | 3/2(+#) | ||
| 90Kr | 36 | 54 | 89.919517(20) | 32.32(9) s | β− | 90mRb | 0+ | ||
| 91Kr | 36 | 55 | 90.92345(6) | 8.57(4) s | β− | 91Rb | 5/2(+) | ||
| 92Kr | 36 | 56 | 91.926156(13) | 1.840(8) s | β− (99.96%) | 92Rb | 0+ | ||
| β−, n (.033%) | 91Rb | ||||||||
| 93Kr | 36 | 57 | 92.93127(11) | 1.286(10) s | β− (98.05%) | 93Rb | 1/2+ | ||
| β−, n (1.95%) | 92Rb | ||||||||
| 94Kr | 36 | 58 | 93.93436(32)# | 210(4) ms | β− (94.3%) | 94Rb | 0+ | ||
| β−, n (5.7%) | 93Rb | ||||||||
| 95Kr | 36 | 59 | 94.93984(43)# | 114(3) ms | β− | 95Rb | 1/2(+) | ||
| 96Kr | 36 | 60 | 95.94307(54)# | 80(7) ms | β− | 96Rb | 0+ | ||
| 97Kr | 36 | 61 | 96.94856(54)# | 63(4) ms | β− | 97Rb | 3/2+# | ||
| β−, n | 96Rb | ||||||||
| 98Kr | 36 | 62 | 97.95191(64)# | 46(8) ms | 0+ | ||||
| 99Kr | 36 | 63 | 98.95760(64)# | 40(11) ms | (3/2+)# | ||||
| 100Kr | 36 | 64 | 99.96114(54)# | 10# ms [>300 ns] |
0+ | ||||
| 101Kr | 36 | 65 | unknown | >635 ns | β−, 2n | 99Rb | unknown | ||
| β−, n | 100Rb | ||||||||
| β− | 101Rb | ||||||||
備註：畫上#號的數據代表沒有經過實驗的証明，只是理論推測而已，而用括號括起來的代表數據不確定性。
| ← | 同位素列表 | → |
| 溴的同位素 | 氪的同位素 | 銣的同位素 |
註釋
参考文獻
- Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
- Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report) （页面存档备份，存于互联网档案馆）. Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) （页面存档备份，存于互联网档案馆）.
- Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
- Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties （页面存档备份，存于互联网档案馆）, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database （页面存档备份，存于互联网档案馆） (retrieved Sept. 2005).
- David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.