鈰的同位素

鈰（原子量：140.116(1)）的同位素，其中有1個同位素是穩定的，另外有3個目前歸類為穩定的同位素，理論上都會進行雙β衰變（衰變為鋇或釹），但是半衰期都只有下界。

圖表
|-
| 119Ce
| style="text-align:right" | 58
| style="text-align:right" | 61
| 118.95276(64)#
| 200# ms
|
| 119La
| 5/2+#
|
|
|-
| 120Ce
| style="text-align:right" | 58
| style="text-align:right" | 62
| 119.94664(75)#
| 250# ms
|
| 120La
| 0+
|
|
|-
| 121Ce
| style="text-align:right" | 58
| style="text-align:right" | 63
| 120.94342(54)#
| 1.1(1) s
|
| 121La
| (5/2)(+#)
|
|
|-
| rowspan=2|122Ce
| rowspan=2 style="text-align:right" | 58
| rowspan=2 style="text-align:right" | 64
| rowspan=2|121.93791(43)#
| rowspan=2|2# s
|
| 122La
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| ,
| 121Ba
|-
| rowspan=2|123Ce
| rowspan=2 style="text-align:right" | 58
| rowspan=2 style="text-align:right" | 65
| rowspan=2|122.93540(32)#
| rowspan=2|3.8(2) s
|
| 123La
| rowspan=2|(5/2)(+#)
| rowspan=2|
| rowspan=2|
|-
| ,
| 122Ba
|-
| 124Ce
| style="text-align:right" | 58
| style="text-align:right" | 66
| 123.93041(32)#
| 9.1(12) s
|
| 124La
| 0+
|
|
|-
| rowspan=2|125Ce
| rowspan=2 style="text-align:right" | 58
| rowspan=2 style="text-align:right" | 67
| rowspan=2|124.92844(21)#
| rowspan=2|9.3(3) s
|
| 125La
| rowspan=2|(7/2-)
| rowspan=2|
| rowspan=2|
|-
| ,
| 124Ba
|-
| 126Ce
| style="text-align:right" | 58
| style="text-align:right" | 68
| 125.92397(3)
| 51.0(3) s
|
| 126La
| 0+
|
|
|-
| 127Ce
| style="text-align:right" | 58
| style="text-align:right" | 69
| 126.92273(6)
| 29(2) s
|
| 127La
| 5/2+#
|
|
|-
| 128Ce
| style="text-align:right" | 58
| style="text-align:right" | 70
| 127.91891(3)
| 3.93(2) min
|
| 128La
| 0+
|
|
|-
| 129Ce
| style="text-align:right" | 58
| style="text-align:right" | 71
| 128.91810(3)
| 3.5(3) min
|
| 129La
| (5/2+)
|
|
|-
| 130Ce
| style="text-align:right" | 58
| style="text-align:right" | 72
| 129.91474(3)
| 22.9(5) min
|
| 130La
| 0+
|
|
|-
| style="text-indent:1em" | 130mCe
| colspan="3" style="text-indent:2em" | 2453.6(3) keV
| 100(8) ns
|
|
| (7-)
|
|
|-
| 131Ce
| style="text-align:right" | 58
| style="text-align:right" | 73
| 130.91442(4)
| 10.2(3) min
|
| 131La
| (7/2+)
|
|
|-
| style="text-indent:1em" | 131mCe
| colspan="3" style="text-indent:2em" | 61.8(1) keV
| 5.0(10) min
|
| 131La
| (1/2+)
|
|
|-
| 132Ce
| style="text-align:right" | 58
| style="text-align:right" | 74
| 131.911460(22)
| 3.51(11) h
|
| 132La
| 0+
|
|
|-
| style="text-indent:1em" | 132mCe
| colspan="3" style="text-indent:2em" | 2340.8(5) keV
| 9.4(3) ms
| IT
| 132Ce
| (8-)
|
|
|-
| 133Ce
| style="text-align:right" | 58
| style="text-align:right" | 75
| 132.911515(18)
| 97(4) min
|
| 133La
| 1/2+
|
|
|-
| style="text-indent:1em" | 133mCe
| colspan="3" style="text-indent:2em" | 37.1(8) keV
| 4.9(4) h
|
| 133La
| 9/2-
|
|
|-
| 134Ce
| style="text-align:right" | 58
| style="text-align:right" | 76
| 133.908925(22)
| 3.16(4) d
|
| 134La
| 0+
|
|
|-
| 135Ce
| style="text-align:right" | 58
| style="text-align:right" | 77
| 134.909151(12)
| 17.7(3) h
|
| 135La
| 1/2(+)
|
|
|-
| style="text-indent:1em" | 135mCe
| colspan="3" style="text-indent:2em" | 445.8(2) keV
| 20(1) s
| IT
| 135Ce
| (11/2-)
|
|
|-
| 136Ce
| style="text-align:right" | 58
| style="text-align:right" | 78
| 135.907172(14)
| colspan=3 align=center|觀測上穩定
| 0+
| 0.00185(2)
| 0.00185-0.00186
|-
| style="text-indent:1em" | 136mCe
| colspan="3" style="text-indent:2em" | 3095.5(4) keV
| 2.2(2) µs
|
|
| 10+
|
|
|-
| 137Ce
| style="text-align:right" | 58
| style="text-align:right" | 79
| 136.907806(14)
| 9.0(3) h
|
| 137La
| 3/2+
|
|
|-
| rowspan=2 style="text-indent:1em" | 137mCe
| rowspan=2 colspan="3" style="text-indent:2em" | 254.29(5) keV
| rowspan=2|34.4(3) h
| IT (99.22%)
| 137Ce
| rowspan=2|11/2-
| rowspan=2|
| rowspan=2|
|-
| (.779%)
| 137La
|-
| 138Ce
| style="text-align:right" | 58
| style="text-align:right" | 80
| 137.905991(11)
| colspan=3 align=center|觀測上穩定
| 0+
| 0.00251(2)
| 0.00251-0.00254
|-
| style="text-indent:1em" | 138mCe
| colspan="3" style="text-indent:2em" | 2129.17(12) keV
| 8.65(20) ms
| IT
| 138Ce
| 7-
|
|
|-
| 139Ce
| style="text-align:right" | 58
| style="text-align:right" | 81
| 138.906653(8)
| 137.641(20) d
|
| 139La
| 3/2+
|
|
|-
| style="text-indent:1em" | 139mCe
| colspan="3" style="text-indent:2em" | 754.24(8) keV
| 56.54(13) s
| IT
| 139Ce
| 11/2-
|
|
|-
| 140Ce
| style="text-align:right" | 58
| style="text-align:right" | 82
| 139.9054387(26)
| colspan=3 align=center|**'
| 0+
| 0.88450(51)
| 0.88446-0.88449
|-
| style="text-indent:1em" | 140mCe
| colspan="3" style="text-indent:2em" | 2107.85(3) keV
| 7.3(15) µs
|
|
| 6+
|
|
|-
| 141Ce
| 0+
| 0.11114(51)
| 0.11114-0.11114
|-
| 143Ce
| style="text-align:right" | 58
| style="text-align:right" | 85
| 142.912386(3)
| 33.039(6) h
|
| 143Pr
| 3/2-
|
|
|-
| 144Ce
| style="text-align:right" | 58
| style="text-align:right" | 86
| 143.913647(4)
| 284.91(5) d
|
| 144mPr
| 0+
|
|
|-
| 145Ce
| style="text-align:right" | 58
| style="text-align:right" | 87
| 144.91723(4)
| 3.01(6) min
|
| 145Pr
| (3/2-)
|
|
|-
| 146Ce
| style="text-align:right" | 58
| style="text-align:right" | 88
| 145.91876(7)
| 13.52(13) min
|
| 146Pr
| 0+
|
|
|-
| 147Ce
| style="text-align:right" | 58
| style="text-align:right" | 89
| 146.92267(3)
| 56.4(10) s
|
| 147Pr
| (5/2-)
|
|
|-
| 148Ce
| style="text-align:right" | 58
| style="text-align:right" | 90
| 147.92443(3)
| 56(1) s
|
| 148Pr
| 0+
|
|
|-
| 149Ce
| style="text-align:right" | 58
| style="text-align:right" | 91
| 148.9284(1)
| 5.3(2) s
|
| 149Pr
| (3/2-)#
|
|
|-
| 150Ce
| style="text-align:right" | 58
| style="text-align:right" | 92
| 149.93041(5)
| 4.0(6) s
|
| 150Pr
| 0+
|
|
|-
| 151Ce
| style="text-align:right" | 58
| style="text-align:right" | 93
| 150.93398(11)
| 1.02(6) s
|
| 151Pr
| 3/2-#
|
|
|-
| 152Ce
| style="text-align:right" | 58
| style="text-align:right" | 94
| 151.93654(21)#
| 1.4(2) s
|
| 152Pr
| 0+
|
|
|-
| 153Ce
| style="text-align:right" | 58
| style="text-align:right" | 95
| 152.94058(43)#
| 500# ms [>300 ns]
|
| 153Pr
| 3/2-#
|
|
|-
| 154Ce
| style="text-align:right" | 58
| style="text-align:right" | 96
| 153.94342(54)#
| 300# ms [>300 ns]
|
| 154Pr
| 0+
|
|
|-
| 155Ce
| style="text-align:right" | 58
| style="text-align:right" | 97
| 154.94804(64)#
| 200# ms [>300 ns]
|
| 155Pr
| 5/2-#
|
|
|-
| 156Ce
| style="text-align:right" | 58
| style="text-align:right" | 98
| 155.95126(64)#
| 150# ms
|
| 156Pr
| 0+
|
|
|-
| 157Ce
| style="text-align:right" | 58
| style="text-align:right" | 99
| 156.95634(75)#
| 50# ms
|
| 157Pr
| 7/2+#
|
|
|}

参考文獻

Isotope masses from [https://web.archive.org/web/20080923134436/http://www.nndc.bnl.gov/amdc/index.html 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 [http://www.iupac.org/publications/pac/2003/7506/7506x0683.html Atomic weights of the elements. Review 2000 (IUPAC Technical Report)] . Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and [http://www.iupac.org/news/archives/2005/atomic-weights_revised05.html 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. [http://amdc.in2p3.fr/web/nubase_en.html 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 [https://www.nndc.bnl.gov/nudat2/ 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.

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