砷的同位素
砷(原子量:74.921595(6))共有43個同位素,其中有1個同位素是穩定的。
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標準原子質量 (Ar, 標準) |
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圖表 编辑
符號 | Z( p ) |
N( n ) |
同位素質量(u) | 半衰期 | 衰變 方式[2] |
衰變 產物[n 1] |
原子核 自旋 |
相對豐度 (莫耳分率) |
相對豐度 的變化量 (莫耳分率) |
---|---|---|---|---|---|---|---|---|---|
激發能量 | |||||||||
60As | 33 | 27 | 59.99313(64)# | p | 59Ge | 5+# | |||
61As | 33 | 28 | 60.98062(64)# | p | 60Ge | 3/2-# | |||
62As | 33 | 29 | 61.97320(32)# | p | 61Ge | 1+# | |||
63As | 33 | 30 | 62.96369(54)# | p | 62Ge | (3/2-)# | |||
64As | 33 | 31 | 63.95757(38)# | 40(30) ms [18(+43-7) ms] |
β+ | 64Ge | 0+# | ||
65As | 33 | 32 | 64.94956(32)# | 170(30) ms | β+ | 65Ge | 3/2-# | ||
66As | 33 | 33 | 65.94471(73) | 95.77(23) ms | β+ | 66Ge | (0+) | ||
66m1As | 1356.70(17) keV | 1.1(1) µs | (5+) | ||||||
66m2As | 3023.9(3) keV | 8.2(5) µs | (9+) | ||||||
67As | 33 | 34 | 66.93919(11) | 42.5(12) s | β+ | 67Ge | (5/2-) | ||
68As | 33 | 35 | 67.93677(5) | 151.6(8) s | β+ | 68Ge | 3+ | ||
68mAs | 425.21(16) keV | 111(20) ns [?107(+23-16) ns] |
1+ | ||||||
69As | 33 | 36 | 68.93227(3) | 15.2(2) min | β+ | 69Ge | 5/2- | ||
70As | 33 | 37 | 69.93092(5) | 52.6(3) min | β+ | 70Ge | 4(+#) | ||
70mAs | 32.008(23) keV | 96(3) µs | 2(+) | ||||||
71As | 33 | 38 | 70.927112(5) | 65.28(15) h | β+ | 71Ge | 5/2- | ||
72As | 33 | 39 | 71.926752(5) | 26.0(1) h | β+ | 72Ge | 2- | ||
73As | 33 | 40 | 72.923825(4) | 80.30(6) d | ε | 73Ge | 3/2- | ||
74As | 33 | 41 | 73.9239287(25) | 17.77(2) d | β+ (66%) | 74Ge | 2- | ||
β− (34%) | 74Se | ||||||||
75 As |
33 | 42 | 74.9215965(20) | 稳定 | 3/2- | 1.0000 | |||
75mAs | 303.9241(7) keV | 17.62(23) ms | 9/2+ | ||||||
76As | 33 | 43 | 75.922394(2) | 1.0942(7) d | β− (99.98%) | 76Se | 2- | ||
ε (.02%) | 76Ge | ||||||||
76mAs | 44.425(1) keV | 1.84(6) µs | (1)+ | ||||||
77As | 33 | 44 | 76.9206473(25) | 38.83(5) h | β− | 77mSe | 3/2- | ||
77mAs | 475.443(16) keV | 114.0(25) µs | 9/2+ | ||||||
78As | 33 | 45 | 77.921827(11) | 90.7(2) min | β− | 78Se | 2- | ||
79As | 33 | 46 | 78.920948(6) | 9.01(15) min | β− | 79mSe | 3/2- | ||
79mAs | 772.81(6) keV | 1.21(1) µs | (9/2)+ | ||||||
80As | 33 | 47 | 79.922534(25) | 15.2(2) s | β− | 80Se | 1+ | ||
81As | 33 | 48 | 80.922132(6) | 33.3(8) s | β− | 81mSe | 3/2- | ||
82As | 33 | 49 | 81.92450(21) | 19.1(5) s | β− | 82Se | (1+) | ||
82mAs | 250(200) keV | 13.6(4) s | β− | 82Se | (5-) | ||||
83As | 33 | 50 | 82.92498(24) | 13.4(3) s | β− | 83mSe | 3/2-# | ||
84As | 33 | 51 | 83.92906(32)# | 4.02(3) s | β− (99.721%) | 84Se | (3)(+#) | ||
β−, n (.029%) | 83Se | ||||||||
84mAs | 0(100)# keV | 650(150) ms | |||||||
85As | 33 | 52 | 84.93202(21)# | 2.021(10) s | β−, n (59.4%) | 84Se | (3/2-)# | ||
β− (40.6%) | 85Se | ||||||||
86As | 33 | 53 | 85.93650(32)# | 0.945(8) s | β− (67%) | 86Se | |||
β−, n (33%) | 85Se | ||||||||
87As | 33 | 54 | 86.93990(32)# | 0.56(8) s | β− (84.6%) | 87Se | 3/2-# | ||
β−, n (15.4%) | 86Se | ||||||||
88As | 33 | 55 | 87.94494(54)# | 300# ms [>300 ns] |
β− | 88Se | |||
β−, n | 87Se | ||||||||
89As | 33 | 56 | 88.94939(54)# | 200# ms [>300 ns] |
β− | 89Se | 3/2-# | ||
90As | 33 | 57 | 89.95550(86)# | 80# ms [>300 ns] |
|||||
91As | 33 | 58 | 90.96043(97)# | 50# ms [>300 ns] |
3/2-# | ||||
92As | 33 | 59 | 91.96680(97)# | 30# ms [>300 ns] |
備註:畫上#號的數據代表沒有經過實驗的証明,只是理論推測而已,而用括號括起來的代表數據不確定性。
← | 同位素列表 | → |
鍺的同位素 | 砷的同位素 | 硒的同位素 |
註釋 编辑
- ^ Bold for stable isotopes, bold italic for nearly-stable isotopes (half-life longer than the age of the universe)
参考文獻 编辑
- ^ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. Standard atomic weights of the elements 2021 (IUPAC Technical Report). Pure and Applied Chemistry. 2022-05-04. ISSN 1365-3075. doi:10.1515/pac-2019-0603 (英语).
- ^ 存档副本. [2015-09-13]. (原始内容存档于2017-02-19).
- 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 (页面存档备份,存于互联网档案馆), Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (页面存档备份,存于互联网档案馆) (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.