Isotopes of lawrencium: Difference between revisions
Appearance
Content deleted Content added
XinaNicole (talk | contribs) No edit summary |
XinaNicole (talk | contribs) |
||
Line 8: | Line 8: | ||
! <br />isotopic mass (u)<br /> |
! <br />isotopic mass (u)<br /> |
||
! rowspan="2" | half-life |
! rowspan="2" | half-life |
||
! rowspan="2" | decay<br>mode(s)<ref>http://www.nucleonica.net/unc.aspx</ref><ref group="n">Abbreviations:<br>SF: [[Spontaneous fission]]</ref> |
|||
! rowspan="2" | daughter<br>isotope(s) |
|||
! rowspan="2" | nuclear<br />spin |
! rowspan="2" | nuclear<br />spin |
||
|- |
|- |
||
Line 19: | Line 21: | ||
| --> |
| --> |
||
|- |
|- |
||
| <sup>252</sup>Lr |
| rowspan=3|<sup>252</sup>Lr |
||
| style="text-align:right" | 103 |
| rowspan=3 style="text-align:right" | 103 |
||
| style="text-align:right" | 149 |
| rowspan=3 style="text-align:right" | 149 |
||
| 252.09537(27)# |
| rowspan=3|252.09537(27)# |
||
| 390(90) ms<br>[0.36(+11-7) s] |
| rowspan=3|390(90) ms<br>[0.36(+11-7) s] |
||
| [[alpha decay|α]] (90%) |
|||
| |
|||
| <sup>248</sup>Md |
|||
| rowspan=3| |
|||
|- |
|- |
||
| <sup> |
| [[beta decay|β<sup>+</sup>]] (10%) |
||
| <sup>252</sup>No |
|||
| style="text-align:right" | 103 |
|||
|- |
|||
| style="text-align:right" | 150 |
|||
| [[Spontaneous fission|SF]] (1%) |
|||
| 253.09521(24)# |
|||
| (various) |
|||
| 580(70) ms<br>[0.57(+7-6) s] |
|||
| |
|- |
||
| rowspan=3|<sup>253</sup>Lr |
|||
| rowspan=3 style="text-align:right" | 103 |
|||
| rowspan=3 style="text-align:right" | 150 |
|||
| rowspan=3|253.09521(24)# |
|||
| rowspan=3|580(70) ms<br>[0.57(+7-6) s] |
|||
| α (90%) |
|||
| <sup>249</sup>Md |
|||
| rowspan=3|(7/2-) |
|||
|- |
|||
| SF (9%) |
|||
| (various) |
|||
|- |
|||
| β<sup>+</sup> (1%) |
|||
| <sup>253</sup>No |
|||
|- |
|- |
||
| style="text-indent:1em" | <sup>253m</sup>Lr |
| style="text-indent:1em" | <sup>253m</sup>Lr |
||
| colspan="3" style="text-indent:2em" | 30(100)# keV |
| colspan="3" style="text-indent:2em" | 30(100)# keV |
||
| 1.5(3) s<br>[1.5(+3-2) s] |
| 1.5(3) s<br>[1.5(+3-2) s] |
||
| |
|||
| |
|||
| (1/2-) |
| (1/2-) |
||
|- |
|- |
||
| <sup>254</sup>Lr |
| rowspan=3|<sup>254</sup>Lr |
||
| style="text-align:right" | 103 |
| rowspan=3 style="text-align:right" | 103 |
||
| style="text-align:right" | 151 |
| rowspan=3 style="text-align:right" | 151 |
||
| 254.09645(36)# |
| rowspan=3|254.09645(36)# |
||
| 13(3) s |
| rowspan=3|13(3) s |
||
| α (78%) |
|||
| |
|||
| <sup>250</sup>Md |
|||
| rowspan=3| |
|||
|- |
|- |
||
| <sup> |
| β<sup>+</sup> (22%) |
||
| <sup>254</sup>No |
|||
| style="text-align:right" | 103 |
|||
| style="text-align:right" | 152 |
|||
| 255.09668(22)# |
|||
| 22(4) s |
|||
| 7/2-# |
|||
|- |
|- |
||
| SF (.1%) |
|||
| <sup>256</sup>Lr |
|||
| (various) |
|||
| style="text-align:right" | 103 |
|||
| style="text-align:right" | 153 |
|||
| 256.09863(24)# |
|||
| 27(3) s |
|||
| |
|||
|- |
|- |
||
| <sup> |
| rowspan=3|<sup>255</sup>Lr |
||
| style="text-align:right" | 103 |
| rowspan=3 style="text-align:right" | 103 |
||
| style="text-align:right" | |
| rowspan=3 style="text-align:right" | 152 |
||
| |
| rowspan=3|255.09668(22)# |
||
| |
| rowspan=3|22(4) s |
||
| α (69%) |
|||
| 9/2+# |
|||
| <sup>251</sup>Md |
|||
| rowspan=3|7/2-# |
|||
|- |
|- |
||
| <sup> |
| β<sup>+</sup> (30%) |
||
| <sup>255</sup>No |
|||
| style="text-align:right" | 103 |
|||
| style="text-align:right" | 155 |
|||
| 258.10181(11)# |
|||
| 4.1(3) s |
|||
| |
|||
|- |
|- |
||
| SF (1%) |
|||
| <sup>259</sup>Lr |
|||
| (various) |
|||
| style="text-align:right" | 103 |
|||
| style="text-align:right" | 156 |
|||
| 259.10290(8)# |
|||
| 6.2(3) s |
|||
| 9/2+# |
|||
|- |
|- |
||
| <sup> |
| rowspan=3|<sup>256</sup>Lr |
||
| style="text-align:right" | 103 |
| rowspan=3 style="text-align:right" | 103 |
||
| style="text-align:right" | |
| rowspan=3 style="text-align:right" | 153 |
||
| |
| rowspan=3|256.09863(24)# |
||
| rowspan=3|27(3) s |
|||
| 2.7 min |
|||
| α (80%) |
|||
| |
|||
| <sup>252</sup>Md |
|||
| rowspan=3| |
|||
|- |
|- |
||
| <sup> |
| β<sup>+</sup> (20%) |
||
| <sup>256</sup>No |
|||
| style="text-align:right" | 103 |
|||
| style="text-align:right" | 158 |
|||
| 261.10688(22)# |
|||
| 44 min |
|||
| |
|||
|- |
|- |
||
| SF (.01%) |
|||
| <sup>262</sup>Lr |
|||
| (various) |
|||
| style="text-align:right" | 103 |
|||
|- |
|||
| style="text-align:right" | 159 |
|||
| rowspan=3|<sup>257</sup>Lr |
|||
| 262.10963(22)# |
|||
| rowspan=3 style="text-align:right" | 103 |
|||
| 216 min |
|||
| rowspan=3 style="text-align:right" | 154 |
|||
| |
|||
| rowspan=3|257.09956(22)# |
|||
| rowspan=3|646(25) ms |
|||
| α (99.99%) |
|||
| <sup>253</sup>Md |
|||
| rowspan=3|9/2+# |
|||
|- |
|||
| β<sup>+</sup> (.01%) |
|||
| <sup>257</sup>No |
|||
|- |
|||
| SF (.001%) |
|||
| (various) |
|||
|- |
|||
| rowspan=2|<sup>258</sup>Lr<ref group="n">First isotope synthesized</ref> |
|||
| rowspan=2 style="text-align:right" | 103 |
|||
| rowspan=2 style="text-align:right" | 155 |
|||
| rowspan=2|258.10181(11)# |
|||
| rowspan=2|4.1(3) s |
|||
| α (95%) |
|||
| <sup>254</sup>Md |
|||
| rowspan=2| |
|||
|- |
|||
| β<sup>+</sup> (5%) |
|||
| <sup>258</sup>No |
|||
|- |
|||
| rowspan=3|<sup>259</sup>Lr |
|||
| 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 |
|||
| α (77%) |
|||
| <sup>255</sup>Md |
|||
| rowspan=3|9/2+# |
|||
|- |
|||
| SF (23%) |
|||
| (various) |
|||
|- |
|||
| β<sup>+</sup> (.5%) |
|||
| <sup>259</sup>No |
|||
|- |
|||
| rowspan=3|<sup>260</sup>Lr |
|||
| rowspan=3 style="text-align:right" | 103 |
|||
| rowspan=3 style="text-align:right" | 157 |
|||
| rowspan=3|260.10550(12)# |
|||
| rowspan=3|2.7 min |
|||
| α (75%) |
|||
| <sup>256</sup>Md |
|||
| rowspan=3| |
|||
|- |
|||
| β<sup>+</sup> (15%) |
|||
| <sup>260</sup>No |
|||
|- |
|||
| SF (10%) |
|||
| (various) |
|||
|- |
|||
| rowspan=2|<sup>261</sup>Lr |
|||
| 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| |
|||
|- |
|||
| α (rare) |
|||
| <sup>257</sup>Md |
|||
|- |
|||
| rowspan=2|<sup>262</sup>Lr |
|||
| rowspan=2 style="text-align:right" | 103 |
|||
| rowspan=2 style="text-align:right" | 159 |
|||
| rowspan=2|262.10963(22)# |
|||
| rowspan=2|216 min |
|||
| β<sup>+</sup> |
|||
| <sup>262</sup>No |
|||
| rowspan=2| |
|||
|- |
|||
| α (rare) |
|||
| <sup>258</sup>Md |
|||
<!-- |- |
<!-- |- |
||
| <sup>263</sup>Lr |
| <sup>263</sup>Lr |
Revision as of 14:59, 22 May 2011
Lawrencium (Lr) has no stable isotopes. There are eleven known radioisotopes from 252Lr to 262Lr, and 1 isomer (253mLr). The isotope with the longest half-life is 262Lr with a half-life of 216 minutes. Heavier isotopes are expected to have longer half-lives. A standard atomic mass cannot be given as lawrencium is artificial.
Table
nuclide symbol |
Z(p) | N(n) | isotopic mass (u) |
half-life | decay mode(s)[1][n 1] |
daughter isotope(s) |
nuclear spin |
---|---|---|---|---|---|---|---|
excitation energy | |||||||
252Lr | 103 | 149 | 252.09537(27)# | 390(90) ms [0.36(+11-7) s] |
α (90%) | 248Md | |
β+ (10%) | 252No | ||||||
SF (1%) | (various) | ||||||
253Lr | 103 | 150 | 253.09521(24)# | 580(70) ms [0.57(+7-6) s] |
α (90%) | 249Md | (7/2-) |
SF (9%) | (various) | ||||||
β+ (1%) | 253No | ||||||
253mLr | 30(100)# keV | 1.5(3) s [1.5(+3-2) s] |
(1/2-) | ||||
254Lr | 103 | 151 | 254.09645(36)# | 13(3) s | α (78%) | 250Md | |
β+ (22%) | 254No | ||||||
SF (.1%) | (various) | ||||||
255Lr | 103 | 152 | 255.09668(22)# | 22(4) s | α (69%) | 251Md | 7/2-# |
β+ (30%) | 255No | ||||||
SF (1%) | (various) | ||||||
256Lr | 103 | 153 | 256.09863(24)# | 27(3) s | α (80%) | 252Md | |
β+ (20%) | 256No | ||||||
SF (.01%) | (various) | ||||||
257Lr | 103 | 154 | 257.09956(22)# | 646(25) ms | α (99.99%) | 253Md | 9/2+# |
β+ (.01%) | 257No | ||||||
SF (.001%) | (various) | ||||||
258Lr[n 2] | 103 | 155 | 258.10181(11)# | 4.1(3) s | α (95%) | 254Md | |
β+ (5%) | 258No | ||||||
259Lr | 103 | 156 | 259.10290(8)# | 6.2(3) s | α (77%) | 255Md | 9/2+# |
SF (23%) | (various) | ||||||
β+ (.5%) | 259No | ||||||
260Lr | 103 | 157 | 260.10550(12)# | 2.7 min | α (75%) | 256Md | |
β+ (15%) | 260No | ||||||
SF (10%) | (various) | ||||||
261Lr | 103 | 158 | 261.10688(22)# | 44 min | SF | (various) | |
α (rare) | 257Md | ||||||
262Lr | 103 | 159 | 262.10963(22)# | 216 min | β+ | 262No | |
α (rare) | 258Md |
- ^ Abbreviations:
SF: Spontaneous fission - ^ First isotope synthesized
Notes
- Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
- Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.
References
- Isotope masses from:
- G. Audi, A. H. Wapstra, C. Thibault, J. Blachot and O. Bersillon (2003). "The NUBASE evaluation of nuclear and decay properties" (PDF). Nuclear Physics A. 729: 3–128. doi:10.1016/j.nuclphysa.2003.11.001.
{{cite journal}}
: CS1 maint: multiple names: authors list (link)
- G. Audi, A. H. Wapstra, C. Thibault, J. Blachot and O. Bersillon (2003). "The NUBASE evaluation of nuclear and decay properties" (PDF). Nuclear Physics A. 729: 3–128. doi:10.1016/j.nuclphysa.2003.11.001.
- Isotopic compositions and standard atomic masses from:
- J. R. de Laeter, J. K. Böhlke, P. De Bièvre, H. Hidaka, H. S. Peiser, K. J. R. Rosman and P. D. P. Taylor (2003). "Atomic weights of the elements. Review 2000 (IUPAC Technical Report)". Pure and Applied Chemistry. 75 (6): 683–800. doi:10.1351/pac200375060683.
{{cite journal}}
: CS1 maint: multiple names: authors list (link) - M. E. Wieser (2006). "Atomic weights of the elements 2005 (IUPAC Technical Report)". Pure and Applied Chemistry. 78 (11): 2051–2066. doi:10.1351/pac200678112051.
{{cite journal}}
: Unknown parameter|laysummary=
ignored (help)
- J. R. de Laeter, J. K. Böhlke, P. De Bièvre, H. Hidaka, H. S. Peiser, K. J. R. Rosman and P. D. P. Taylor (2003). "Atomic weights of the elements. Review 2000 (IUPAC Technical Report)". Pure and Applied Chemistry. 75 (6): 683–800. doi:10.1351/pac200375060683.
- Half-life, spin, and isomer data selected from the following sources. See editing notes on this article's talk page.
- G. Audi, A. H. Wapstra, C. Thibault, J. Blachot and O. Bersillon (2003). "The NUBASE evaluation of nuclear and decay properties" (PDF). Nuclear Physics A. 729: 3–128. doi:10.1016/j.nuclphysa.2003.11.001.
{{cite journal}}
: CS1 maint: multiple names: authors list (link) - National Nuclear Data Center. "NuDat 2.1 database". Brookhaven National Laboratory. Retrieved September 2005.
{{cite web}}
: Check date values in:|accessdate=
(help) - N. E. Holden (2004). "Table of the Isotopes". In D. R. Lide (ed.). CRC Handbook of Chemistry and Physics (85th ed.). CRC Press. Section 11. ISBN 978-0849304859.
{{cite book}}
: Unknown parameter|nopp=
ignored (|no-pp=
suggested) (help)
- G. Audi, A. H. Wapstra, C. Thibault, J. Blachot and O. Bersillon (2003). "The NUBASE evaluation of nuclear and decay properties" (PDF). Nuclear Physics A. 729: 3–128. doi:10.1016/j.nuclphysa.2003.11.001.