鋦的同位素

鋦有从233Cm到251Cm共19种同位素以及10种同核异构体，全部都有放射性。其中，247Cm最稳定，半衰期1560万年，是之后所有原子序更高的核素半衰期的至少一万倍。它是R-过程产生的。锔最稳定的同核异构体则是246mCm，半衰期1.12秒。

圖表

|-
| rowspan=2|233Cm
| rowspan=2 style="text-align:right" | 96
| rowspan=2 style="text-align:right" | 137
| rowspan=2|233.05077(8)
| rowspan=2|1# min
| 
| 233Am
| rowspan=2|3/2+#
|-
| 
| 229Pu
|-
| rowspan=2|234Cm
| rowspan=2 style="text-align:right" | 96
| rowspan=2 style="text-align:right" | 138
| rowspan=2|234.05016(2)
| rowspan=2|51(12) s
| 
| 234Am
| rowspan=2|0+
|-
| 
| 230Pu
|-
| rowspan=2|235Cm
| rowspan=2 style="text-align:right" | 96
| rowspan=2 style="text-align:right" | 139
| rowspan=2|235.05143(22)#
| rowspan=2|5# min
| 
| 235Am
| rowspan=2|5/2+#
|-
| 
| 231Pu
|-
| rowspan=2|236Cm
| rowspan=2 style="text-align:right" | 96
| rowspan=2 style="text-align:right" | 140
| rowspan=2|236.05141(22)#
| rowspan=2|10# min
| 
| 236Am
| rowspan=2|0+
|-
| 
| 232Pu
|-
| rowspan=2|237Cm
| rowspan=2 style="text-align:right" | 96
| rowspan=2 style="text-align:right" | 141
| rowspan=2|237.05290(22)#
| rowspan=2|20# min
| 
| 237Am
| rowspan=2|5/2+#
|-
| 
| 233Pu
|-
| rowspan=2|238Cm
| rowspan=2 style="text-align:right" | 96
| rowspan=2 style="text-align:right" | 142
| rowspan=2|238.05303(4)
| rowspan=2|2.4(1) h
|  (90%)
| 238Am
| rowspan=2|0+
|-
|  (10%)
| 234Pu
|-
| rowspan=2|239Cm
| rowspan=2 style="text-align:right" | 96
| rowspan=2 style="text-align:right" | 143
| rowspan=2|239.05496(11)#
| rowspan=2|~2.9 h
|  (99.9%)
| 239Am
| rowspan=2|(7/2−)
|-
|  (.1%)
| 235Pu
|-
| rowspan=3|240Cm
| rowspan=3 style="text-align:right" | 96
| rowspan=3 style="text-align:right" | 144
| rowspan=3|240.0555295(25)
| rowspan=3|27(1) d
|  (99.5%)
| 236Pu
| rowspan=3|0+
|-
|  (.5%)
| 240Am
|-
|  (3.9×10−6%)
| (various)
|-
| rowspan=2|241Cm
| rowspan=2 style="text-align:right" | 96
| rowspan=2 style="text-align:right" | 145
| rowspan=2|241.0576530(23)
| rowspan=2|32.8(2) d
|  (99%)
| 241Am
| rowspan=2|1/2+
|-
|  (1%)
| 237Pu
|-
| rowspan="3" |242CmMost common isotopes
| rowspan="3" style="text-align:right" | 96
| rowspan="3" style="text-align:right" | 146
| rowspan="3" |242.0588358(20)
| rowspan="3" |162.8(2) d
| 
| 238Pu
| rowspan="3" |0+
|-
| SF (6.33×10−6%)
| (various)
|-
|  (10−14%)Heaviest known nuclide to undergo cluster decay
| 208Pb34Si
|-
| rowspan=3|243Cm
| rowspan=3 style="text-align:right" | 96
| rowspan=3 style="text-align:right" | 147
| rowspan=3|243.0613891(22)
| rowspan=3|29.1(1) y
|  (99.71%)
| 239Pu
| rowspan=3|5/2+
|-
|  (.29%)
| 243Am
|-
| SF (5.3×10−9%)
| (various)
|-
| style="text-indent:1em" | 243mCm
| colspan="3" style="text-indent:2em" | 87.4(1) keV
| 1.08(3) µs
|
|
| 1/2+
|-
| rowspan=2|244Cm
| rowspan=2 style="text-align:right" | 96
| rowspan=2 style="text-align:right" | 148
| rowspan=2|244.0627526(20)
| rowspan=2|18.10(2) y
| 
| 240Pu
| rowspan=2|0+
|-
| SF (1.34×10−4%)
| (various)
|-
| style="text-indent:1em" | 244mCm
| colspan="3" style="text-indent:2em" | 1040.188(12) keV
| 34(2) ms
| 
| 244Cm
| 6+
|-
| rowspan=2|245Cm
| rowspan=2 style="text-align:right" | 96
| rowspan=2 style="text-align:right" | 149
| rowspan=2|245.0654912(22)
| rowspan=2|8.5(1)×103 y
| 
| 241Pu
| rowspan=2|7/2+
|-
| SF (6.1×10−7%)
| (various)
|-
| style="text-indent:1em" | 245mCm
| colspan="3" style="text-indent:2em" | 355.90(10) keV
| 290(20) ns
|
|
| 1/2+
|-
| rowspan=2|246Cm
| rowspan=2 style="text-align:right" | 96
| rowspan=2 style="text-align:right" | 150
| rowspan=2|246.0672237(22)
| rowspan=2|4.76(4)×103 y
|  (99.97%)
| 242Pu
| rowspan=2|0+
|-
| SF (.0261%)
| (various)
|-
| style="text-indent:1em" | 246mCm
| colspan="3" style="text-indent:2em" | 1179.66(13) keV
| 1.12(0.24) s
| IT
| 246Cm
| 8-
|-
| 247Cm
| style="text-align:right" | 96
| style="text-align:right" | 151
| 247.070354(5)
| 1.56(5)×107 y
| 
| 243Pu
| 9/2−
|-
| rowspan="2" |248Cm
| rowspan="2" style="text-align:right" | 96
| rowspan="2" style="text-align:right" | 152
| rowspan="2" |248.072349(5)
| rowspan="2" |3.48(6)×105 y
|  (91.74%)
| 244Pu
| rowspan="2" |0+
|-
| SF (8.26%)
| (various)
|-
| 249Cm
| style="text-align:right" | 96
| style="text-align:right" | 153
| 249.075953(5)
| 64.15(3) min
| 
| 249Bk
| 1/2(+)
|-
| style="text-indent:1em" | 249mCm
| colspan="3" style="text-indent:2em" | 48.758(17) keV
| 23 µs
|
|
| (7/2+)
|-
| rowspan=3|250Cm
| rowspan=3 style="text-align:right" | 96
| rowspan=3 style="text-align:right" | 154
| rowspan=3|250.078357(12)
| rowspan=3|8,300# y
| SF (80%)Lightest nuclide to undergo spontaneous fission as the main decay mode
| (various)
| rowspan=3|0+
|-
|  (11%)
| 246Pu
|-
|  (9%)
| 250Bk
|-
| 251Cm
| style="text-align:right" | 96
| style="text-align:right" | 155
| 251.082285(24)
| 16.8(2) min
| 
| 251Bk
| (1/2+)
|}

 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).
 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.

Cm

Category:鋦