Isotopes of neon
Appearance
Neon (Ne) possesses three stable isotopes, 20Ne, 21Ne, and 22Ne. In addition, 16 radioactive isotopes have been discovered ranging from 16Ne to 34Ne, all short-lived. The longest-lived is 24Ne with a half-life of 3.38 minutes. All others are under a minute, most under a second. The least stable is 16Ne with a half-life of 122 (37) keV. See isotopes of carbon for notes about the measurement.
Standard atomic mass: 20.1797(6) u
Table
nuclide symbol |
Z(p) | N(n) | isotopic mass (u) |
half-life | decay mode(s)[1] | daughter isotope(s)[n 1] |
nuclear spin |
representative isotopic composition (mole fraction) |
range of natural variation (mole fraction) |
---|---|---|---|---|---|---|---|---|---|
16Ne | 10 | 6 | 16.025761(22) | 9×10−21 s [122(37) keV] |
2p | 14O | 0+ | ||
17Ne[n 2] | 10 | 7 | 17.017672(29) | 109.2(6) ms | β+, p (96.0%) | 16O | 1/2- | ||
β+, α (2.7%) | 13C | ||||||||
β+ (1.3%) | 17F | ||||||||
18Ne | 10 | 8 | 18.0057082(3) | 1.672(8) s | Electron capture (EC) | 18F | 0+ | ||
2p (possibly 2He)[2] | 16O | ||||||||
19Ne | 10 | 9 | 19.0018802(3) | 17.296(5) s+ | β+ | 19F | 1/2+ | ||
20Ne | 10 | 10 | 19.9924401754(19) | Stable | 0+ | 0.9048(3) | 0.8847-0.9051 | ||
21Ne | 10 | 11 | 20.99384668(4) | Stable | 3/2+ | 0.0027(1) | 0.0027-0.0171 | ||
22Ne | 10 | 12 | 21.991385114(19) | Stable | 0+ | 0.0925(3) | 0.0920-0.0996 | ||
23Ne | 10 | 13 | 22.99446690(11) | 37.24(12) s | β- | 23Na | 5/2+ | ||
24Ne | 10 | 14 | 23.9936108(4) | 3.38(2) min | β- | 24Na | 0+ | ||
25Ne | 10 | 15 | 24.997737(28) | 602(8) ms | β- | 25Na | (3/2)+ | ||
26Ne | 10 | 16 | 26.000461(29) | 197(1) ms | β- (99.87%) | 26Na | 0+ | ||
β-, n (.13%) | 25Na | ||||||||
27Ne | 10 | 17 | 27.00759(12) | 32(2) ms | β- (98.0%) | 27Na | (3/2+)# | ||
β-, n (2.0%) | 26Na | ||||||||
28Ne | 10 | 18 | 28.01207(16) | 18.3(22) ms | β- (78.0%) | 28Na | 0+ | ||
β-, n (22.0%) | 27Na | ||||||||
29Ne | 10 | 19 | 29.01939(29) | 15.6(5) ms | β- | 29Na | (3/2+)# | ||
30Ne | 10 | 20 | 30.02480(61) | 5.8(2) ms | β- | 30Na | 0+ | ||
31Ne | 10 | 21 | 31.03311(97)# | 3.4(8) ms | β- | 31Na | 7/2-# | ||
β-, n | 30Na | ||||||||
32Ne | 10 | 22 | 32.04002(86)# | 3.5(9) ms | β-, n | 31Na | 0+ | ||
β- | 32Na | ||||||||
33Ne | 10 | 23 | 33.04938(86)# | <260 ns | 7/2-# | ||||
34Ne | 10 | 24 | 34.05703(87)# | 1# ms [>1.5 µs] | 0+ |
Notes
- The isotopic composition refers to that in air.
- The precision of the isotope abundances and atomic mass is limited through variations. The given ranges should be applicable to any normal terrestrial material.
- Geologically exceptional samples are known in which the isotopic composition lies outside the reported range. The uncertainty in the atomic mass may exceed the stated value for such specimens.
- Commercially available materials may have been subjected to an undisclosed or inadvertent isotopic fractionation. Substantial deviations from the given mass and composition can occur.
- 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:
- 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.
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: CS1 maint: multiple names: authors list (link)
- 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.
{{cite journal}}
: CS1 maint: multiple names: authors list (link) - 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.
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ignored (help)
- 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.
- 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.
{{cite journal}}
: CS1 maint: multiple names: authors list (link) - National Nuclear Data Center. "NuDat 2.1 database". Brookhaven National Laboratory. Retrieved September 2005.
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(help) - 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 978-0849304859.
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- 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.