鉭（原子質量單位：180.94788(2)）的同位素，有1個是穩定的，另一個為天然存在的核異構體，理論上不穩定，但是半衰期只有下界。
圖表
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 82
| 154.97459(54)#
| 13(4) µs
[12(+4−3) µs]
|
|
| (11/2−)
|
|
|-
| rowspan=2|
| rowspan=2 style="text-align:right" | 73
| rowspan=2 style="text-align:right" | 83
| rowspan=2|155.97230(43)#
| rowspan=2|144(24) ms
| (95.8%)
| 156Hf
| rowspan=2|(2−)
| rowspan=2|
| rowspan=2|
|-
| (4.2%)
| 155Hf
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 102(7) keV
| 0.36(4) s
|
| 155Hf
| 9+
|
|
|-
| rowspan=2|
| rowspan=2 style="text-align:right" | 73
| rowspan=2 style="text-align:right" | 84
| rowspan=2|156.96819(22)
| rowspan=2|10.1(4) ms
| (91%)
| 153Lu
| rowspan=2|1/2+
| rowspan=2|
| rowspan=2|
|-
| (9%)
| 157Hf
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 22(5) keV
| 4.3(1) ms
|
|
| 11/2−
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 1593(9) keV
| 1.7(1) ms
|
| 153Lu
| (25/2−)
|
|
|-
| rowspan=2|
| rowspan=2 style="text-align:right" | 73
| rowspan=2 style="text-align:right" | 85
| rowspan=2|157.96670(22)#
| rowspan=2|49(8) ms
| (96%)
| 154Lu
| rowspan=2|(2−)
| rowspan=2|
| rowspan=2|
|-
| (4%)
| 158Hf
|-
| rowspan=3 style="text-indent:1em" |
| rowspan=3 colspan="3" style="text-indent:2em" | 141(9) keV
| rowspan=3|36.0(8) ms
| (93%)
| 154Lu
| rowspan=3|(9+)
| rowspan=3|
| rowspan=3|
|-
| IT
| 158Ta
|-
|
| 158Hf
|-
| rowspan=2|
| rowspan=2 style="text-align:right" | 73
| rowspan=2 style="text-align:right" | 86
| rowspan=2|158.963018(22)
| rowspan=2|1.04(9) s
| (66%)
| 159Hf
| rowspan=2|(1/2+)
| rowspan=2|
| rowspan=2|
|-
| (34%)
| 155Lu
|-
| rowspan=2 style="text-indent:1em" |
| rowspan=2 colspan="3" style="text-indent:2em" | 64(5) keV
| rowspan=2|514(9) ms
| (56%)
| 155Lu
| rowspan=2|(11/2−)
| rowspan=2|
| rowspan=2|
|-
| (44%)
| 159Hf
|-
| rowspan=2|
| rowspan=2 style="text-align:right" | 73
| rowspan=2 style="text-align:right" | 87
| rowspan=2|159.96149(10)
| rowspan=2|1.70(20) s
|
| 156Lu
| rowspan=2|(2#)−
| rowspan=2|
| rowspan=2|
|-
|
| 160Hf
|-
| rowspan=2 style="text-indent:1em" |
| rowspan=2 colspan="3" style="text-indent:2em" | 310(90)# keV
| rowspan=2|1.55(4) s
| (66%)
| 160Hf
| rowspan=2|(9)+
| rowspan=2|
| rowspan=2|
|-
| (34%)
| 156Lu
|-
| rowspan=2|
| rowspan=2 style="text-align:right" | 73
| rowspan=2 style="text-align:right" | 88
| rowspan=2|160.95842(6)#
| rowspan=2|3# s
| (95%)
| 161Hf
| rowspan=2|1/2+#
| rowspan=2|
| rowspan=2|
|-
| (5%)
| 157Lu
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 50(50)# keV
| 2.89(12) s
|
|
| 11/2−#
|
|
|-
| rowspan=2|
| rowspan=2 style="text-align:right" | 73
| rowspan=2 style="text-align:right" | 89
| rowspan=2|161.95729(6)
| rowspan=2|3.57(12) s
| (99.92%)
| 162Hf
| rowspan=2|3+#
| rowspan=2|
| rowspan=2|
|-
| (.073%)
| 158Lu
|-
| rowspan=2|
| rowspan=2 style="text-align:right" | 73
| rowspan=2 style="text-align:right" | 90
| rowspan=2|162.95433(4)
| rowspan=2|10.6(18) s
| (99.8%)
| 163Hf
| rowspan=2|1/2+#
| rowspan=2|
| rowspan=2|
|-
| (.2%)
| 159Lu
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 91
| 163.95353(3)
| 14.2(3) s
|
| 164Hf
| (3+)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 92
| 164.950773(19)
| 31.0(15) s
|
| 165Hf
| 5/2−#
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 60(30) keV
|
|
|
| 9/2−#
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 93
| 165.95051(3)
| 34.4(5) s
|
| 166Hf
| (2)+
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 94
| 166.94809(3)
| 1.33(7) min
|
| 167Hf
| (3/2+)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 95
| 167.94805(3)
| 2.0(1) min
|
| 168Hf
| (2−,3+)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 96
| 168.94601(3)
| 4.9(4) min
|
| 169Hf
| (5/2+)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 97
| 169.94618(3)
| 6.76(6) min
|
| 170Hf
| (3)(+#)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 98
| 170.94448(3)
| 23.3(3) min
|
| 171Hf
| (5/2−)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 99
| 171.94490(3)
| 36.8(3) min
|
| 172Hf
| (3+)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 100
| 172.94375(3)
| 3.14(13) h
|
| 173Hf
| 5/2−
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 101
| 173.94445(3)
| 1.14(8) h
|
| 174Hf
| 3+
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 102
| 174.94374(3)
| 10.5(2) h
|
| 175Hf
| 7/2+
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 103
| 175.94486(3)
| 8.09(5) h
|
| 176Hf
| (1)−
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 103.0(10) keV
| 1.1(1) ms
| IT
| 176Ta
| (+)
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 1372.6(11)+X keV
| 3.8(4) µs
|
|
| (14−)
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 2820(50) keV
| 0.97(7) ms
|
|
| (20−)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 104
| 176.944472(4)
| 56.56(6) h
|
| 177Hf
| 7/2+
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 73.36(15) keV
| 410(7) ns
|
|
| 9/2−
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 186.15(6) keV
| 3.62(10) µs
|
|
| 5/2−
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 1355.01(19) keV
| 5.31(25) µs
|
|
| 21/2−
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 4656.3(5) keV
| 133(4) µs
|
|
| 49/2−
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 105
| 177.945778(16)
| 9.31(3) min
|
| 178Hf
| 1+
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 100(50)# keV
| 2.36(8) h
|
| 178Hf
| (7)−
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 1570(50)# keV
| 59(3) ms
|
|
| (15−)
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 3000(50)# keV
| 290(12) ms
|
|
| (21−)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 106
| 178.9459295(23)
| 1.82(3) a
|
| 179Hf
| 7/2+
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 30.7(1) keV
| 1.42(8) µs
|
|
| (9/2)−
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 520.23(18) keV
| 335(45) ns
|
|
| (1/2)+
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 1252.61(23) keV
| 322(16) ns
|
|
| (21/2−)
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 1317.3(4) keV
| 9.0(2) ms
| IT
| 179Ta
| (25/2+)
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 1327.9(4) keV
| 1.6(4) µs
|
|
| (23/2−)
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 2639.3(5) keV
| 54.1(17) ms
|
|
| (37/2+)
|
|
|-
| rowspan=2|
| rowspan=2 style="text-align:right" | 73
| rowspan=2 style="text-align:right" | 107
| rowspan=2|179.9474648(24)
| rowspan=2|8.152(6) h
| (86%)
| 180Hf
| rowspan=2|1+
| rowspan=2|
| rowspan=2|
|-
| (14%)
| 180W
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 77.1(8) keV
| colspan=3 align=center|觀測上穩定
| 9−
| 1.2(2)×10−4
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 1452.40(18) keV
| 31.2(14) µs
|
|
| 15−
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 3679.0(11) keV
| 2.0(5) µs
|
|
| (22−)
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 4171.0+X keV
| 17(5) µs
|
|
| (23,24,25)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 108
| 180.9479958(20)
| colspan=3 align=center|觀測上穩定
| 7/2+
| 0.99988(2)
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 6.238(20) keV
| 6.05(12) µs
|
|
| 9/2−
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 615.21(3) keV
| 18(1) µs
|
|
| 1/2+
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 1485(3) keV
| 25(2) µs
|
|
| 21/2−
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 2230(3) keV
| 210(20) µs
|
|
| 29/2−
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 109
| 181.9501518(19)
| 114.43(3) d
|
| 182W
| 3−
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 16.263(3) keV
| 283(3) ms
| IT
| 182Ta
| 5+
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 519.572(18) keV
| 15.84(10) min
|
|
| 10−
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 110
| 182.9513726(19)
| 5.1(1) d
|
| 183W
| 7/2+
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 73.174(12) keV
| 107(11) ns
|
|
| 9/2−
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 111
| 183.954008(28)
| 8.7(1) h
|
| 184W
| (5−)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 112
| 184.955559(15)
| 49.4(15) min
|
| 185W
| (7/2+)#
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" | 1308(29) keV
| >1 ms
|
|
| (21/2−)
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 113
| 185.95855(6)
| 10.5(3) min
|
| 186W
| (2−,3−)
|
|
|-
| style="text-indent:1em" |
| colspan="3" style="text-indent:2em" |
| 1.54(5) min
|
|
|
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 114
| 186.96053(21)#
| 2# min
[>300 ns]
|
| 187W
| 7/2+#
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 115
| 187.96370(21)#
| 20# s
[>300 ns]
|
| 188W
|
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 116
| 188.96583(32)#
| 3# s
[>300 ns]
|
|
| 7/2+#
|
|
|-
|
| style="text-align:right" | 73
| style="text-align:right" | 117
| 189.96923(43)#
| 0.3# s
|
|
|
|
|
|}
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 [http://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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