以下列出了鐒的同位素：
圖表
|-
| rowspan=3|252Lr
| rowspan=3 style="text-align:right" | 103
| rowspan=3 style="text-align:right" | 149
| rowspan=3|252.09526(26)#
| rowspan=3|390(90) ms
[0.36(+11−7) s]
| (90%)
| 248Md
| rowspan=3|
|-
| (10%)
| 252No
|-
| SF (1%)
| (various)
|-
| rowspan=3|253Lr
| rowspan=3 style="text-align:right" | 103
| rowspan=3 style="text-align:right" | 150
| rowspan=3|253.09509(22)#
| rowspan=3|580(70) ms
[0.57(+7−6) s]
| (90%)
| 249Md
| rowspan=3|(7/2−)
|-
| SF (9%)
| (various)
|-
| (1%)
| 253No
|-
| style="text-indent:1em" | 253mLr
| rowspan=3 style="text-align:right" | 103
| rowspan=3 style="text-align:right" | 151
| rowspan=3|254.09648(32)#
| rowspan=3|13(3) s
| (78%)
| 250Md
| rowspan=3|
|-
| (22%)
| 254No
|-
| SF (.1%)
| (various)
|-
| rowspan=3|255Lr
| rowspan=3 style="text-align:right" | 103
| rowspan=3 style="text-align:right" | 152
| rowspan=3|255.096562(19)
| rowspan=3|22(4) s
| (69%)
| 251Md
| rowspan=3|7/2−#
|-
| (30%)
| 255No
|-
| SF (1%)
| (various)
|-
| rowspan=3|256Lr
| rowspan=3 style="text-align:right" | 103
| rowspan=3 style="text-align:right" | 153
| rowspan=3|256.09849(9)
| rowspan=3|27(3) s
| (80%)
| 252Md
| rowspan=3|
|-
| (20%)
| 256No
|-
| SF (.01%)
| (various)
|-
| rowspan=3|257Lr
| rowspan=3 style="text-align:right" | 103
| rowspan=3 style="text-align:right" | 154
| rowspan=3|257.09942(5)#
| rowspan=3|646(25) ms
| (99.99%)
| 253Md
| rowspan=3|9/2+#
|-
| (.01%)
| 257No
|-
| SF (.001%)
| (various)
|-
| rowspan=2|258Lr
| rowspan=2 style="text-align:right" | 103
| rowspan=2 style="text-align:right" | 155
| rowspan=2|258.10176(11)#
| rowspan=2|4.1(3) s
| (95%)
| 254Md
| rowspan=2|
|-
| (5%)
| 258No
|-
| rowspan=3|259Lr
| rowspan=3 style="text-align:right" | 103
| rowspan=3 style="text-align:right" | 156
| rowspan=3|259.10290(8)#
| rowspan=3|6.2(3) s
| (77%)
| 255Md
| rowspan=3|9/2+#
|-
| SF (23%)
| (various)
|-
| (.5%)
| 259No
|-
| rowspan=3|260Lr
| rowspan=3 style="text-align:right" | 103
| rowspan=3 style="text-align:right" | 157
| rowspan=3|260.10551(13)#
| rowspan=3|2.7 min
| (75%)
| 256Md
| rowspan=3|
|-
| (15%)
| 260No
|-
| SF (10%)
| (various)
|-
| rowspan=2|261Lr
| rowspan=2 style="text-align:right" | 103
| rowspan=2 style="text-align:right" | 158
| rowspan=2|261.10688(22)#
| rowspan=2|44 min
| SF
| (various)
| rowspan=2|
|-
| （不常見）
| 257Md
|-
| rowspan=2|262Lr
| rowspan=2 style="text-align:right" | 103
| rowspan=2 style="text-align:right" | 159
| rowspan=2|262.10961(22)#
| rowspan=2|216 min
|
| 262No
| rowspan=2|
|-
| （不常見）
| 258Md
|-
| 264Lr
| style="text-align:right" | 103
| style="text-align:right" | 161
| 264.11420(47)#
| h
|
| (various)
|
|-
| 266Lr
| style="text-align:right" | 103
| style="text-align:right" | 163
| 266.11983(56)#
| 11 h
| SF
| (various)
|
|-
|}
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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