硼的同位素
10B在天然樣品中的含量可低至19.1%,也可以高達20.3%。而剩下的部分才是11B[2]。 | ||||||||||||||||||||||||
標準原子質量 (Ar, 標準) |
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圖表
符號 | Z(p ) | N(n ) | 同位素質量(u) | 半衰期 | 衰變 方式[4] |
衰變 產物 |
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) |
---|---|---|---|---|---|---|---|---|---|
7B | 5 | 2 | 7.02992(8) | 350(50)×10−24 s [1.4(2) MeV] |
p | 6 Be[n 1] |
(3⁄2−) | ||
8B[n 2] | 5 | 3 | 8.0246072(11) | 770(3) ms | β+, α | 2 4 He |
2+ | ||
9B | 5 | 4 | 9.0133288(11) | 800(300)×10−21 s [0.54(21) keV] |
p | 8 Be[n 3] |
3⁄2− | ||
10B | 5 | 5 | 10.0129370(4) | 稳定 | 3+ | 0.199(7) | 0.18929–0.20386 | ||
11 B |
5 | 6 | 11.0093054(4) | 稳定 | 3⁄2− | 0.801(7) | 0.79614–0.81071 | ||
12B | 5 | 7 | 12.0143521(15) | 20.20(2) ms | β− (98.4%) | 12 C |
1+ | ||
β−, α (1.6%) | 8 Be[n 4] | ||||||||
13B | 5 | 8 | 13.0177802(12) | 17.33(17) ms | β− (99.72%) | 13 C |
3⁄2− | ||
β−, n (0.279%) | 12 C | ||||||||
14B | 5 | 9 | 14.025404(23) | 12.5(5) ms | β− (93.96%) | 14 C |
2− | ||
β−, n (6.04%) | 13 C | ||||||||
15B | 5 | 10 | 15.031103(24) | 9.87(7) ms | β−, n (93.6%) | 14 C |
3⁄2− | ||
β− (6.0%) | 15 C | ||||||||
β−, 2n (0.40%) | 13 C | ||||||||
16B | 5 | 11 | 16.03981(6) | <190×10−12 s [<0.1 MeV] |
n | 15 B |
0− | ||
17B[n 5] | 5 | 12 | 17.04699(18) | 5.08(5) ms | β−, n (63.0%) | 16 C |
(3⁄2−) | ||
β− (22.1%) | 17 C | ||||||||
β−, 2n (11.0%) | 15 C | ||||||||
β−, 3n (3.5%) | 14 C | ||||||||
β−, 4n (0.40%) | 13 C | ||||||||
18B | 5 | 13 | 18.05617(86)# | <26 ns | n | 17 B |
(4−)# | ||
19B[n 5] | 5 | 14 | 19.06373(43)# | 2.92(13) ms | β− | 19 C |
(3⁄2−)# |
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 | → |
鈹的同位素 | 硼的同位素 | 碳的同位素 |
註釋
- Subsequently decays by double proton emission to 4He for a net reaction of 7B → 4He + 3 1H
- Has 1 halo proton
- immediately decays into two α particles, for a net reaction of 9B → 2 4He + 1H
- Immediately decays into two α particles, for a net reaction of 12B → 3 4He + e−
- Has 2 halo neutrons
參考文獻
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- Meija, Juris; 等. . Pure and Applied Chemistry. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305.
- . nucleonica. [2015-09-07]. (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).
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- 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, Nuc. Phys. A 729, pp. 3-128 (2003).
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