ایزوتوپهای بور
عنصر بور به طور طبیعی دارای دو ایزوتوپ طبیعی B و B است. همچنین ایزوتوپهای با جرم اتمی ۶ تا ۲۱ بور، ناپایدار بوده و نیمه عمر بسیار اندک دارند.
جدول ایزوتوپ ها
| نماد | Z(p) | N(n) | جرم ایزوتوپ (u) | نیمه عمر | حالت واپاشی | daughter isotope(s) | اسپین هسته ای | representative isotopic composition (درصد مولی) | range of natural variation (درصد مولی) |
|---|---|---|---|---|---|---|---|---|---|
| B | 5 | 1 | 6.04681(75)# | ||||||
| B | 5 | 2 | 7.02992(8) | 350(50)×10 s [1.4(2) MeV] | p | 6 Be | (⁄2−) | ||
| B | 5 | 3 | 8.0246072(11) | 770(3) ms | β, fission | 2 4 He | 2+ | ||
| B | 5 | 4 | 9.0133288(11) | 800(300)×10 s [0.54(21) keV] | p | 8 Be | ⁄2− | ||
| B | 5 | 5 | 10.0129370(4) | Stable | 3+ | 19.9(7) | 18.929 – 20.386 | ||
| B | 5 | 6 | 11.0093054(4) | پایدار | ⁄2− | 80.1(7) | 79.614–81.071 | ||
| B | 5 | 7 | 12.0143521(15) | 20.20(2) ms | β (98.4%) | 12 C | 1+ | ||
| β, α (1.6%) | 8 Be | ||||||||
| B | 5 | 8 | 13.0177802(12) | 17.33(17) ms | β (99.72%) | 13 C | ⁄2− | ||
| β, n (0.279%) | 12 C | ||||||||
| B | 5 | 9 | 14.025404(23) | 12.5(5) ms | β (93.96%) | 14 C | 2− | ||
| β, n (6.04%) | 13 C | ||||||||
| B | 5 | 10 | 15.031103(24) | 9.87(7) ms | β, n (93.6%) | 14 C | ⁄2− | ||
| β (6.0%) | 15 C | ||||||||
| β, 2n (0.40%) | 13 C | ||||||||
| B | 5 | 11 | 16.03981(6) | <190×10 s [<0.1 MeV] | n | 15 B | 0− | ||
| B | 5 | 12 | 17.04699(18) | 5.08(5) ms | β, n (63.0%) | 16 C | (⁄2−) | ||
| β (22.1%) | 17 C | ||||||||
| β, 2n (11.0%) | 15 C | ||||||||
| β, 3n (3.5%) | 14 C | ||||||||
| β, 4n (0.40%) | 13 C | ||||||||
| B | 5 | 13 | 18.05617(86)# | <26 ns | n | 17 B | (4−)# | ||
| B | 5 | 14 | 19.06373(43)# | 2.92(13) ms | β | 19 C | (⁄2−)# | ||
منابع
منابع عمومی
- 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. Bibcode:2003NuPhA.729....3A. 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.
- 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.
- 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. Bibcode:2003NuPhA.729....3A. doi:10.1016/j.nuclphysa.2003.11.001.
- National Nuclear Data Center. "NuDat 2.1 database". Brookhaven National Laboratory. Retrieved September 2005.
- 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 978-0-8493-0485-9.