氪的同位素

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 

|-
| 69Kr
| style="text-align:right" | 36
| style="text-align:right" | 33
| 68.96518(43)#
| 32(10) ms
| 
| 69Br
| 5/2-#
|
|
|-
| 70Kr
| style="text-align:right" | 36
| style="text-align:right" | 34
| 69.95526(41)#
| 52(17) ms
| 
| 70Br
| 0+
|
|
|-
| rowspan=2|71Kr
| rowspan=2 style="text-align:right" | 36
| rowspan=2 style="text-align:right" | 35
| rowspan=2|70.94963(70)
| rowspan=2|100(3) ms
|  (94.8%)
| 71Br
| rowspan=2|(5/2)-
| rowspan=2|
| rowspan=2|
|-
| ,  (5.2%)
| 70Se
|-
| 72Kr
| style="text-align:right" | 36
| style="text-align:right" | 36
| 71.942092(9)
| 17.16(18) s
| 
| 72Br
| 0+
|
|
|-
| rowspan=2|73Kr
| rowspan=2 style="text-align:right" | 36
| rowspan=2 style="text-align:right" | 37
| rowspan=2|72.939289(7)
| rowspan=2|28.6(6) s
|  (99.32%)
| 73Br
| rowspan=2|3/2-
| rowspan=2|
| rowspan=2|
|-
| , p (.68%)
| 72Se
|-
| style="text-indent:1em" | 73mKr
| colspan="3" style="text-indent:2em" | 433.66(12) keV
| 107(10) ns
|
|
| (9/2+)
|
|
|-
| 74Kr
| style="text-align:right" | 36
| style="text-align:right" | 38
| 73.9330844(22)
| 11.50(11) min
| 
| 74Br
| 0+
|
|
|-
| 75Kr
| style="text-align:right" | 36
| style="text-align:right" | 39
| 74.930946(9)
| 4.29(17) min
| 
| 75Br
| 5/2+
|
|
|-
| 76Kr
| style="text-align:right" | 36
| style="text-align:right" | 40
| 75.925910(4)
| 14.8(1) h
| 
| 76Br
| 0+
|
|
|-
| 77Kr
| style="text-align:right" | 36
| style="text-align:right" | 41
| 76.9246700(21)
| 74.4(6) min
| 
| 77Br
| 5/2+
|
|
|-
| 78Kr
| style="text-align:right" | 36
| style="text-align:right" | 42
| 77.9203648(12)
| align=center|9.2   y
|双电子捕获
|78Se
| 0+
| 0.00355(3)
|
|-
| 79Kr
| style="text-align:right" | 36
| style="text-align:right" | 43
| 78.920082(4)
| 35.04(10) h
| 
| 79Br
| 1/2-
|
|
|-
| style="text-indent:1em" | 79mKr
| colspan="3" style="text-indent:2em" | 129.77(5) keV
| 50(3) s
|
|
| 7/2+
|
|
|-
| 80Kr
| style="text-align:right" | 36
| style="text-align:right" | 44
| 79.9163790(16)
| colspan=3 align=center|
| 0+
| 0.02286(10)
|
|-
| 81Kr用于测量地下水的年龄
| style="text-align:right" | 36
| style="text-align:right" | 45
| 80.9165920(21)
| 2.29(11)×105 a
| 
| 81Br
| 7/2+
|trace
|
|-
| rowspan=2 style="text-indent:1em" | 81mKr
| rowspan=2 colspan="3" style="text-indent:2em" | 190.62(4) keV
| rowspan=2|13.10(3) s
| IT (99.975%)
| 81Kr
| rowspan=2|1/2-
| rowspan=2|
| rowspan=2|
|-
|  (.025%)
| 81Br
|-
| 82Kr
| style="text-align:right" | 36
| style="text-align:right" | 46
| 81.9134836(19)
| colspan=3 align=center|
| 0+
| 0.11593(31)
|
|-
| 83Kr裂变产物
| style="text-align:right" | 36
| style="text-align:right" | 47
| 82.914136(3)
| colspan=3 align=center|
| 9/2+
| 0.11500(19)
|
|-
| style="text-indent:1em" | 83m1Kr
| colspan="3" style="text-indent:2em" | 9.4053(8) keV
| 154.4(11) ns
|
|
| 7/2+
|
|
|-
| style="text-indent:1em" | 83m2Kr
| colspan="3" style="text-indent:2em" | 41.5569(10) keV
| 1.83(2) h
| IT
| 83Kr
| 1/2-
|
|
|-
| 
| style="text-align:right" | 36
| style="text-align:right" | 48
| 83.911507(3)
| colspan=3 align=center|
| 0+
| 0.56987(15)
|
|-
| style="text-indent:1em" | 84mKr
| colspan="3" style="text-indent:2em" | 3236.02(18) keV
| 1.89(4) µs
|
|
| 8+
|
|
|-
| 
| style="text-align:right" | 36
| style="text-align:right" | 49
| 84.9125273(21)
| 10.776(3) a
| 
| 85Rb
| 9/2+
|trace
|
|-
| rowspan=2 style="text-indent:1em" | 85m1Kr
| rowspan=2 colspan="3" style="text-indent:2em" | 304.871(20) keV
| rowspan=2|4.480(8) h
|  (78.6%)
| 85Rb
| rowspan=2|1/2-
| rowspan=2|
| rowspan=2|
|-
| IT (21.4%)
| 85Kr
|-
| style="text-indent:1em" | 85m2Kr
| colspan="3" style="text-indent:2em" | 1991.8(13) keV
| 1.6(7) µs[1.2(+10-4) µs]
|
|
| (17/2+)
|
|
|-
| 86Kr以前用于定义米的长度
| style="text-align:right" | 36
| style="text-align:right" | 50
| 85.91061073(11)
| colspan=3 align=center|觀測上穩定被认为会双β衰变成86Sr
| 0+
| 0.17279(41)
|
|-
| 87Kr
| style="text-align:right" | 36
| style="text-align:right" | 51
| 86.91335486(29)
| 76.3(5) min
| 
| 87Rb
| 5/2+
|
|
|-
| 88Kr
| style="text-align:right" | 36
| style="text-align:right" | 52
| 87.914447(14)
| 2.84(3) h
| 
| 88Rb
| 0+
|
|
|-
| 89Kr
| style="text-align:right" | 36
| style="text-align:right" | 53
| 88.91763(6)
| 3.15(4) min
| 
| 89Rb
| 3/2(+#)
|
|
|-
| 90Kr
| style="text-align:right" | 36
| style="text-align:right" | 54
| 89.919517(20)
| 32.32(9) s
| 
| 90mRb
| 0+
|
|
|-
| 91Kr
| style="text-align:right" | 36
| style="text-align:right" | 55
| 90.92345(6)
| 8.57(4) s
| 
| 91Rb
| 5/2(+)
|
|
|-
| rowspan=2|92Kr
| rowspan=2 style="text-align:right" | 36
| rowspan=2 style="text-align:right" | 56
| rowspan=2|91.926156(13)
| rowspan=2|1.840(8) s
|  (99.96%)
| 92Rb
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| ,  (.033%)
| 91Rb
|-
| rowspan=2|93Kr
| rowspan=2 style="text-align:right" | 36
| rowspan=2 style="text-align:right" | 57
| rowspan=2|92.93127(11)
| rowspan=2|1.286(10) s
|  (98.05%)
| 93Rb
| rowspan=2|1/2+
| rowspan=2|
| rowspan=2|
|-
| ,  (1.95%)
| 92Rb
|-
| rowspan=2|94Kr
| rowspan=2 style="text-align:right" | 36
| rowspan=2 style="text-align:right" | 58
| rowspan=2|93.93436(32)#
| rowspan=2|210(4) ms
|  (94.3%)
| 94Rb
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| ,  (5.7%)
| 93Rb
|-
| 95Kr
| style="text-align:right" | 36
| style="text-align:right" | 59
| 94.93984(43)#
| 114(3) ms
| 
| 95Rb
| 1/2(+)
|
|
|-
| 96Kr
| style="text-align:right" | 36
| style="text-align:right" | 60
| 95.94307(54)#
| 80(7) ms
| 
| 96Rb
| 0+
|
|
|-
| rowspan=2|97Kr
| rowspan=2 style="text-align:right" | 36
| rowspan=2 style="text-align:right" | 61
| rowspan=2|96.94856(54)#
| rowspan=2|63(4) ms
| 
| 97Rb
| rowspan=2|3/2+#
| rowspan=2|
| rowspan=2|
|-
| , n
| 96Rb
|-
| 98Kr
| style="text-align:right" | 36
| style="text-align:right" | 62
| 97.95191(64)#
| 46(8) ms
|
|
| 0+
|
|
|-
| 99Kr
| style="text-align:right" | 36
| style="text-align:right" | 63
| 98.95760(64)#
| 40(11) ms
|
|
| (3/2+)#
|
|
|-
| 100Kr
| style="text-align:right" | 36
| style="text-align:right" | 64
| 99.96114(54)#
| 10# ms[>300 ns]
|
|
| 0+
|
|
|-
| rowspan=3 | 101Kr
| rowspan=3 style="text-align:right"| 36
| rowspan=3 style="text-align:right"| 65
| rowspan=3 | unknown
| rowspan=3 | >635 ns
| , 2
| 99Rb
| rowspan=3 | unknown
| rowspan=3 |
| rowspan=3 |
|-
| , 
| 100Rb
|-
| 
| 101Rb
|}

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) . Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) .
 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 , Nuc. Phys. A 729, pp. 3-128 (2003).
 National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database  (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.

Kr
Category:氪的同位素