鋂的同位素

鋂是人造元素，没有稳定同位素，也无法确认标准原子质量。目前已发现229Am至247Am共19种同位素，以及未确认的223Am。其中，243Am最稳定，半衰期7350年。

圖表
|-
| 223Am
| style="text-align:right" | 95
| style="text-align:right" | 128
| 223.04584(32)#
| 10(9) ms
|
| 219Np
| 9/2–#
|-
| 229Am
| style="text-align:right" | 95
| style="text-align:right" | 134
| 229.04528(11)
| 1.8(15) s
|
| 225Np
| 5/2–#
|-
| rowspan=2 | 230Am
| rowspan=2 style="text-align:right" | 95
| rowspan=2 style="text-align:right" | 135
| rowspan=2 | 230.04603(15)#
| rowspan=2 | 40(9) s
| (230Pu
| rowspan=2 | 1–#
|-
| , (>30%)
| (various)
|-
| rowspan=2 | 231Am
| rowspan=2 style="text-align:right" | 95
| rowspan=2 style="text-align:right" | 136
| rowspan=2 | 231.04553(32)#
| rowspan=2 |
| (~83%)
| 231Pu
| rowspan=2 | 5/2–#
|-
| (~17%)
| 227Np
|-
| rowspan=3|232Am
| rowspan=3 style="text-align:right" | 95
| rowspan=3 style="text-align:right" | 137
| rowspan=3|232.04659(32)#
| rowspan=3|79(2) s
| (98%)
| 232Pu
| rowspan=3|
|-
| (2%)
| 228Np
|-
| , (.069%)
| (various)
|-
| rowspan=2|233Am
| rowspan=2 style="text-align:right" | 95
| rowspan=2 style="text-align:right" | 138
| rowspan=2|233.04635(11)#
| rowspan=2|3.2(8) min
|
| 233Pu
| rowspan=2|
|-
|
| 229Np
|-
| rowspan=3|234Am
| rowspan=3 style="text-align:right" | 95
| rowspan=3 style="text-align:right" | 139
| rowspan=3|234.04781(22)#
| rowspan=3|2.32(8) min
| (99.95%)
| 234Pu
| rowspan=3|
|-
| (.04%)
| 230Np
|-
| , SF (.0066%)
| (various)
|-
| rowspan=2|235Am
| rowspan=2 style="text-align:right" | 95
| rowspan=2 style="text-align:right" | 140
| rowspan=2|235.04795(13)#
| rowspan=2|9.9(5) min
|
| 235Pu
| rowspan=2|5/2−#
|-
| （不常見）
| 231Np
|-
| rowspan=2|236Am
| rowspan=2 style="text-align:right" | 95
| rowspan=2 style="text-align:right" | 141
| rowspan=2|236.04958(11)#
| rowspan=2|3.6(1) min
|
| 236Pu
| rowspan=2|
|-
|
| 232Np
|-
| rowspan=2|237Am
| rowspan=2 style="text-align:right" | 95
| rowspan=2 style="text-align:right" | 142
| rowspan=2|237.05000(6)#
| rowspan=2|73.0(10) min
| (99.97%)
| 237Pu
| rowspan=2|5/2(−)
|-
| (.025%)
| 233Np
|-
| rowspan=2|238Am
| rowspan=2 style="text-align:right" | 95
| rowspan=2 style="text-align:right" | 143
| rowspan=2|238.05198(5)
| rowspan=2|98(2) min
|
| 238Pu
| rowspan=2|1+
|-
| (10−4%)
| 234Np
|-
| style="text-indent:1em" | 238mAm
| colspan="3" style="text-indent:2em" | 2500(200)# keV
| 35(10) µs
|
|
|
|-
| rowspan=2|239Am
| rowspan=2 style="text-align:right" | 95
| rowspan=2 style="text-align:right" | 144
| rowspan=2|239.0530245(26)
| rowspan=2|11.9(1) h
| (99.99%)
| 239Pu
| rowspan=2|(5/2)−
|-
| (.01%)
| 235Np
|-
| style="text-indent:1em" | 239mAm
| colspan="3" style="text-indent:2em" | 2500(200) keV
| 163(12) ns
|
|
| (7/2+)
|-
| rowspan=2|240Am
| rowspan=2 style="text-align:right" | 95
| rowspan=2 style="text-align:right" | 145
| rowspan=2|240.055300(15)
| rowspan=2|50.8(3) h
|
| 240Pu
| rowspan=2|(3−)
|-
| (1.9×10−4%)
| 236Np
|-
| rowspan=3|241Am
| rowspan=3 style="text-align:right" | 95
| rowspan=3 style="text-align:right" | 146
| rowspan=3|241.0568291(20)
| rowspan=3|432.2(7) y
|
| 237Np
| rowspan=3|5/2−
|-
| (7.4×10−10%)
| 207Tl, 34Si
|-
| SF (4.3×10−10%)
| (various)
|-
| style="text-indent:1em" | 241mAm
| colspan="3" style="text-indent:2em" | 2200(100) keV
| 1.2(3) µs
|
|
|
|-
| rowspan=2|242Am
| rowspan=2 style="text-align:right" | 95
| rowspan=2 style="text-align:right" | 147
| rowspan=2|242.0595492(20)
| rowspan=2|16.02(2) h
| (82.7%)
| 242Cm
| rowspan=2|1−
|-
| (17.3%)
| 242Pu
|-
| rowspan=3 style="text-indent:1em" | 242m1Am
| rowspan=3 colspan="3" style="text-indent:2em" | 48.60(5) keV
| rowspan=3|141(2) y
| IT (99.54%)
| 242Am
| rowspan=3|5−
|-
| (.46%)
| 238Np
|-
| SF (1.5×10−8%)
| (various)
|-
| style="text-indent:1em" | 242m2Am
| colspan="3" style="text-indent:2em" | 2200(80) keV
| 14.0(10) ms
|
|
| (2+,3−)
|-
| rowspan=2|243Am
| rowspan=2 style="text-align:right" | 95
| rowspan=2 style="text-align:right" | 148
| rowspan=2|243.0613811(25)
| rowspan=2|7,370(40) y
|
| 239Np
| rowspan=2|5/2−
|-
| SF (3.7×10−9%)
| (various)
|-
| 244Am
| style="text-align:right" | 95
| style="text-align:right" | 149
| 244.0642848(22)
| 10.1(1) h
|
| 244Cm
| (6−)#
|-
| rowspan=2 style="text-indent:1em" | 244mAm
| rowspan=2 colspan="3" style="text-indent:2em" | 86.1(10) keV
| rowspan=2|26(1) min
| (99.96%)
| 244Cm
| rowspan=2|1+
|-
| (.0361%)
| 244Pu
|-
| 245Am
| style="text-align:right" | 95
| style="text-align:right" | 150
| 245.066452(4)
| 2.05(1) h
|
| 245Cm
| (5/2)+
|-
| 246Am
| style="text-align:right" | 95
| style="text-align:right" | 151
| 246.069775(20)
| 39(3) min
|
| 246Cm
| (7−)
|-
| rowspan=2 style="text-indent:1em" | 246m1Am
| rowspan=2 colspan="3" style="text-indent:2em" | 30(10) keV
| rowspan=2|25.0(2) min
| (99.99%)
| 246Cm
| rowspan=2|2(−)
|-
| IT (.01%)
| 246Am
|-
| style="text-indent:1em" | 246m2Am
| colspan="3" style="text-indent:2em" | ~2000 keV
| 73(10) µs
|
|
|
|-
| 247Am
| style="text-align:right" | 95
| style="text-align:right" | 152
| 247.07209(11)#
| 23.0(13) min
|
| 247Cm
| (5/2)#
|}

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).
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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