錒的同位素
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錒沒有穩定同位素。它最穩定的同位素是半衰期21.772年的227Ac。
圖表
符號 | 歷史 名稱 |
Z | N | 同位素質量(u) [n 1][n 2] |
半衰期 [n 1][n 2] |
衰變 方式[1] |
衰變 產物 [n 3] |
原子核 自旋[n 1] |
相對豐度 (莫耳分率) |
---|---|---|---|---|---|---|---|---|---|
激發能量[n 1][n 2] | |||||||||
204Ac[2] | 89 | 115 | +2.2 −1.4 ms 7.4 |
α | 200Fr | ||||
205Ac[3] | 89 | 116 | +2.7 −1.6 ms 7.7[2] |
α | 201Fr | 9/2−? | |||
206Ac | 89 | 117 | 206.01450(8) | 25(7) ms | α | 202Fr | (3+) | ||
206m1Ac | 80(50) keV | 15(6) ms | α | 202Fr | |||||
206m2Ac | 290(110)# keV | 41(16) ms | α | 202mFr | (10−) | ||||
207Ac | 89 | 118 | 207.01195(6) | 31(8) ms [27(+11−6) ms] |
α | 203Fr | 9/2−# | ||
208Ac | 89 | 119 | 208.01155(6) | 97(16) ms [95(+24−16) ms] |
α (99%) | 204Fr | (3+) | ||
β+ (1%) | 208Ra | ||||||||
208mAc | 506(26) keV | 28(7) ms [25(+9−5) ms] |
α (89%) | 204Fr | (10−) | ||||
IT (10%) | 208Ac | ||||||||
β+ (1%) | 208Ra | ||||||||
209Ac | 89 | 120 | 209.00949(5) | 92(11) ms | α (99%) | 205Fr | (9/2−) | ||
β+ (1%) | 209Ra | ||||||||
210Ac | 89 | 121 | 210.00944(6) | 350(40) ms | α (96%) | 206Fr | 7+# | ||
β+ (4%) | 210Ra | ||||||||
211Ac | 89 | 122 | 211.00773(8) | 213(25) ms | α (99.8%) | 207Fr | 9/2−# | ||
β+ (.2%) | 211Ra | ||||||||
212Ac | 89 | 123 | 212.00781(7) | 920(50) ms | α (97%) | 208Fr | 6+# | ||
β+ (3%) | 212Ra | ||||||||
213Ac | 89 | 124 | 213.00661(6) | 731(17) ms | α | 209Fr | (9/2−)# | ||
β+ (不常見) | 213Ra | ||||||||
214Ac | 89 | 125 | 214.006902(24) | 8.2(2) s | α (89%) | 210Fr | (5+)# | ||
β+ (11%) | 214Ra | ||||||||
215Ac | 89 | 126 | 215.006454(23) | 0.17(1) s | α (99.91%) | 211Fr | 9/2− | ||
β+ (.09%) | 215Ra | ||||||||
216Ac | 89 | 127 | 216.008720(29) | 0.440(16) ms | α | 212Fr | (1−) | ||
β+ (7×10−5%) | 216Ra | ||||||||
216mAc | 44(7) keV | 443(7) µs | (9−) | ||||||
217Ac | 89 | 128 | 217.009347(14) | 69(4) ns | α (98%) | 213Fr | 9/2− | ||
β+ (2%) | 217Ra | ||||||||
217mAc | 2012(20) keV | 740(40) ns | (29/2)+ | ||||||
218Ac | 89 | 129 | 218.01164(5) | 1.08(9) µs | α | 214Fr | (1−)# | ||
218mAc | 584(50)# keV | 103(11) ns | (11+) | ||||||
219Ac | 89 | 130 | 219.01242(5) | 11.8(15) µs | α | 215Fr | 9/2− | ||
β+ (10−6%) | 219Ra | ||||||||
220Ac | 89 | 131 | 220.014763(16) | 26.36(19) ms | α | 216Fr | (3−) | ||
β+ (5×10−4%) | 220Ra | ||||||||
221Ac | 89 | 132 | 221.01559(5) | 52(2) ms | α | 217Fr | 9/2−# | ||
222Ac | 89 | 133 | 222.017844(6) | 5.0(5) s | α (99%) | 218Fr | 1− | ||
β+ (1%) | 222Ra | ||||||||
222mAc | 200(150)# keV | 1.05(7) min | α (88.6%) | 218Fr | high | ||||
IT (10%) | 222Ac | ||||||||
β+ (1.4%) | 222Ra | ||||||||
223Ac | 89 | 134 | 223.019137(8) | 2.10(5) min | α (99%) | 219Fr | (5/2−) | ||
ε (1%) | 223Ra | ||||||||
CD (3.2×10−9%) | 209 Bi 14 C | ||||||||
224Ac | 89 | 135 | 224.021723(4) | 2.78(17) h | β+ (90.9%) | 224Ra | 0− | ||
α (9.1%) | 220Fr | ||||||||
β− (1.6%) | 224Th | ||||||||
225Ac[n 4] | 89 | 136 | 225.023230(5) | 10.0(1) d | α | 221Fr | (3/2−) | ||
CD (6×10−10%) | 211 Bi 14 C | ||||||||
226Ac | 89 | 137 | 226.026098(4) | 29.37(12) h | β− (83%) | 226Th | (1)(−#) | ||
ε (17%) | 226Ra | ||||||||
α (.006%) | 222Fr | ||||||||
227Ac | Actinium[n 5] | 89 | 138 | 227.0277521(26) | 21.772(3) y | β− (98.61%) | 227Th | 3/2− | Trace[n 6] |
α (1.38%) | 223Fr | ||||||||
228Ac | Mesothorium 2 | 89 | 139 | 228.0310211(27) | 6.13(2) h | β− | 228Th | 3+ | Trace[n 7] |
229Ac | 89 | 140 | 229.03302(4) | 62.7(5) min | β− | 229Th | (3/2+) | ||
230Ac | 89 | 141 | 230.03629(32) | 122(3) s | β− | 230Th | (1+) | ||
231Ac | 89 | 142 | 231.03856(11) | 7.5(1) min | β− | 231Th | (1/2+) | ||
232Ac | 89 | 143 | 232.04203(11) | 119(5) s | β− | 232Th | (1+) | ||
233Ac | 89 | 144 | 233.04455(32)# | 145(10) s | β− | 233Th | (1/2+) | ||
234Ac | 89 | 145 | 234.04842(43)# | 44(7) s | β− | 234Th | |||
235Ac | 89 | 146 | 235.05123(38)# | 40# s | β− | 235Th | 1/2+# | ||
236Ac | 89 | 147 | 236.05530(54)# | 2# min | β− | 236Th |
- ^ 1.0 1.1 1.2 1.3 畫上#號的數據代表沒有經過實驗的証明,僅為理論推測。
- ^ 2.0 2.1 2.2 用括號括起來的數據代表不確定性。
- ^ 半衰期超過5億年的衰變產物以粗斜體表示。
- ^ Has medical uses
- ^ Source of element's name
- ^ Intermediate decay product of 235U
- ^ Intermediate decay product of 232Th
← | 同位素列表 | → |
鐳的同位素 | 錒的同位素 | 釷的同位素 |
參考文獻
- ^ Universal Nuclide Chart. nucleonica. [2015-11-03]. (原始內容存檔於2017-02-19).
- ^ 2.0 2.1 Huang, M. H.; Gan, Z. G.; Zhang, Z. Y.; et al. α decay of the new isotope 204Ac. Physics Letters B. 10 November 2022, 834: 137484. ISSN 0370-2693. S2CID 252730841. doi:10.1016/j.physletb.2022.137484 (英語).
- ^ Zhang, Z. Y.; Gan, Z. G.; Ma, L.; et al. α decay of the new neutron-deficient isotope 205Ac. Physical Review C. January 2014, 89 (1): 014308 [2015-11-03]. Bibcode:2014PhRvC..89a4308Z. doi:10.1103/PhysRevC.89.014308. (原始內容存檔於2019-07-01).
- 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 (頁面存檔備份,存於網際網路檔案館), Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (頁面存檔備份,存於網際網路檔案館) (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.
元素與同位素的穩定度 | |||||||||||||||||||||||||||||||||
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