ایزوتوپ‌های اسکاندیم
فلز واسطه اسکاندیم به‌طور طبیعی تنها یک ایزوتوپ پایدار (Sc) دارد. از این عنصر تاکنون ۲۵ ایزوتوپ پرتوزا شناسایی شده‌است که پایدارترین آن‌ها Sc با نیمه عمر ۸۳٫۸ روز است. به‌طور کلی جرم اتمی ایزوتوپ‌های اسکاندیم از ۳۶ u (Sc) تا ۶۰ u (Sc) متغیر است.
جدول ایزوتوپ‌ها
| نماد | Z(p) | N(n) | جرم ایزوتوپ (u) | نیمه عمر | حالت واپاشی | ایزوتوپ دختر) | اسپین | representative isotopic composition (کسر مولی) | range of natural variation (کسر مولی) |
|---|---|---|---|---|---|---|---|---|---|
| excitation energy | |||||||||
| Sc | 21 | 15 | 36.01492(54)# | p | Ca | ||||
| Sc | 21 | 16 | 37.00305(32)# | p | Ca | 7/2-# | |||
| Sc | 21 | 17 | 37.99470(32)# | <300 ns | p | Ca | (2-)# | ||
| Sc | p | Ca | |||||||
| Sc | 21 | 18 | 38.984790(26) | <300 ns | p | Ca | (7/2-)# | ||
| Sc | 21 | 19 | 39.977967(3) | 182.3(7) ms | β (99.54%) | Ca | 4- | ||
| β, p (.44%) | K | ||||||||
| β, α (.017%) | Ar | ||||||||
| Sc | 21 | 20 | 40.96925113(24) | 596.3(17) ms | β | Ca | 7/2- | ||
| Sc | 21 | 21 | 41.96551643(29) | 681.3(7) ms | β | Ca | 0+ | ||
| Sc | 616.28(6) keV | 61.7(4) s | β | Ca | (7,5،6)+ | ||||
| Sc | 21 | 22 | 42.9611507(20) | 3.891(12) h | β | Ca | 7/2- | ||
| Sc | 151.4(2) keV | 438(7) µs | 3/2+ | ||||||
| Sc | 3123.2(3) keV | 470(4) ns | (19/2)- | ||||||
| Sc | 21 | 23 | 43.9594028(19) | 3.97(4) h | β | Ca | 2+ | ||
| Sc | 67.8680(14) keV | 154.2(8) ns | 1- | ||||||
| Sc | 270.95(20) keV | 58.61(10) h | IT (98.8%) | Sc | 6+ | ||||
| β (1.2%) | Ca | ||||||||
| Sc | 146.224(22) keV | 50.4(7) µs | 0- | ||||||
| Sc | 21 | 24 | 44.9559119(9) | پایدار | 7/2- | 1.0000 | |||
| Sc | 12.40(5) keV | 318(7) ms | IT | Sc | 3/2+ | ||||
| Sc | 21 | 25 | 45.9551719(9) | 83.79(4) d | β | Ti | 4+ | ||
| Sc | 52.011(1) keV | 9.4(8) µs | 6+ | ||||||
| Sc | 142.528(7) keV | 18.75(4) s | IT | Sc | 1- | ||||
| Sc | 21 | 26 | 46.9524075(22) | 3.3492(6) d | β | Ti | 7/2- | ||
| Sc | 766.83(9) keV | 272(8) ns | (3/2)+ | ||||||
| Sc | 21 | 27 | 47.952231(6) | 43.67(9) h | β | Ti | 6+ | ||
| Sc | 21 | 28 | 48.950024(4) | 57.2(2) min | β | Ti | 7/2- | ||
| Sc | 21 | 29 | 49.952188(17) | 102.5(5) s | β | Ti | 5+ | ||
| Sc | 256.895(10) keV | 350(40) ms | IT (97.5%) | Sc | 2+,3+ | ||||
| β (2.5%) | Ti | ||||||||
| Sc | 21 | 30 | 50.953603(22) | 12.4(1) s | β | Ti | (7/2)- | ||
| Sc | 21 | 31 | 51.95668(21) | 8.2(2) s | β | Ti | 3(+) | ||
| Sc | 21 | 32 | 52.95961(32)# | >3 s | β (>99.9%) | Ti | (7/2-)# | ||
| β, n (<.1%) | Ti | ||||||||
| Sc | 21 | 33 | 53.96326(40) | 260(30) ms | β (>99.9%) | Ti | 3+# | ||
| β, n (<.1%) | Ti | ||||||||
| Sc | 110(3) keV | 7(5) µs | (5+) | ||||||
| Sc | 21 | 34 | 54.96824(79) | 0.115(15) s | β (>99.9%) | Ti | 7/2-# | ||
| β, n (<.1%) | Ti | ||||||||
| Sc | 21 | 35 | 55.97287(75)# | 35(5) ms | β | Ti | (1+) | ||
| Sc | 21 | 36 | 56.97779(75)# | 13(4) ms | β | Ti | 7/2-# | ||
| Sc | 21 | 37 | 57.98371(86)# | 12(5) ms | β | Ti | (3+)# | ||
| Sc | 21 | 38 | 58.98922(97)# | 10# ms | β, n | Ti | 7/2-# | ||
| β | Ti | ||||||||
| Sc | 21 | 39 | 59.99571(97)# | 3# ms | 3+# | ||||
منابع
- 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.