This MedLibrary.org supplementary page on Isotopes of magnesium is provided directly from the open source Wikipedia as a service to our readers. Please see the note below on authorship of this content, as well as the Wikipedia usage guidelines. To search for other content from our encyclopedia supplement, please use the form below:
Related Sponsors
Magnesium (Mg)
Standard atomic mass: 24.3050(6) u
Contents |
Table
| nuclide symbol |
Z(p) | N(n) | isotopic mass (u) |
half-life | nuclear spin |
representative isotopic composition (mole fraction) |
range of natural variation (mole fraction) |
|---|---|---|---|---|---|---|---|
| excitation energy | |||||||
| 19Mg | 12 | 7 | 19.03547(27) | 1/2-# | |||
| 20Mg | 12 | 8 | 20.018863(29) | 90.8(24) ms | 0+ | ||
| 21Mg | 12 | 9 | 21.011713(18) | 122(2) ms | (5/2,3/2)+ | ||
| 22Mg | 12 | 10 | 21.9995738(14) | 3.8755(12) s | 0+ | ||
| 23Mg | 12 | 11 | 22.9941237(14) | 11.317(11) s | 3/2+ | ||
| 24Mg | 12 | 12 | 23.985041700(14) | STABLE | 0+ | 0.7899(4) | 0.78958-0.79017 |
| 25Mg | 12 | 13 | 24.98583692(3) | STABLE | 5/2+ | 0.1000(1) | 0.09996-0.10012 |
| 26Mg | 12 | 14 | 25.982592929(30) | STABLE | 0+ | 0.1101(3) | 0.10987-0.11030 |
| 27Mg | 12 | 15 | 26.98434059(5) | 9.458(12) min | 1/2+ | ||
| 28Mg | 12 | 16 | 27.9838768(22) | 20.915(9) h | 0+ | ||
| 29Mg | 12 | 17 | 28.988600(15) | 1.30(12) s | 3/2+ | ||
| 30Mg | 12 | 18 | 29.990434(9) | 335(17) ms | 0+ | ||
| 31Mg | 12 | 19 | 30.996546(13) | 230(20) ms | 3/2+ | ||
| 32Mg | 12 | 20 | 31.998975(19) | 86(5) ms | 0+ | ||
| 33Mg | 12 | 21 | 33.005254(21) | 90.5(16) ms | 7/2-# | ||
| 34Mg | 12 | 22 | 34.00946(25) | 20(10) ms | 0+ | ||
| 35Mg | 12 | 23 | 35.01734(43)# | 70(40) ms | (7/2-)# | ||
| 36Mg | 12 | 24 | 36.02300(54)# | 3.9(13) ms | 0+ | ||
| 37Mg | 12 | 25 | 37.03140(97)# | 40# ms [>260 ns] | 7/2-# | ||
| 38Mg | 12 | 26 | 38.03757(54)# | 1# ms [>260 ns] | 0+ | ||
| 39Mg | 12 | 27 | 39.04677(55)# | <260 ns | 7/2-# | ||
| 40Mg | 12 | 28 | 40.05393(97)# | 1# ms | 0+ | ||
Notes
- Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
- Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.
References
- 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).
- Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
- 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, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (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.
External links
| Isotopes of sodium | Isotopes of magnesium | Isotopes of aluminium |
| Index to isotope pages ยท Table of nuclides | ||
Wikipedia content modification information:
- This page was last modified on 6 October 2008, at 10:29.
Wikipedia Authorship and Review
Wikipedia content provided here is not reviewed directly by MedLibrary.org. Wikipedia content is authored by an open community of volunteers and is not produced by or in any way affiliated with MedLibrary.org.
Wikipedia Usage Guidelines
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article on "Isotopes of magnesium".
The URL for this specific entry is:
All Wikipedia text is available under the terms of the GNU Free Documentation License. (See Copyrights for details). Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc.