氖的同位素

氖（原子量：20.1797(6)）共有19個已知同位素，質量數介於15-34之間，其中有3個是穩定的，其他都具有放射性。天然存在的氖同位素有3個，分別是20Ne、21Ne、22Ne，皆為穩定同位素。其他放射性同位素都不出現在自然界中，只有在實驗室製造出來過，且半衰期都極短，非常不穩定。

圖表
|-
| 15Ne
| style="text-align:right;" | 10
| style="text-align:right;" | 5
| 15.04317(7)
| 7.7(3)×10−22 s
[0.59(23)−
2.522(60) MeV]
| 2p
| 13O
| (3/2−)
|
|
|-
| 16Ne
| style="text-align:right" | 10
| style="text-align:right" | 6
| 16.025761(22)
| 9×10−21 s
[122(37) keV]
| 2p
| 14O
| 0+
|
|
|-
| rowspan=3|17Ne
| rowspan=3 style="text-align:right" | 10
| rowspan=3 style="text-align:right" | 7
| rowspan=3|17.017672(29)
| rowspan=3|109.2(6) ms
| β+, p (96.0%)
| 16O
| rowspan=3|1/2–
| rowspan=3|
| rowspan=3|
|-
| β+, α (2.7%)
| 13N
|-
| β+ (1.3%)
| 17F
|-
| rowspan="3" | 18Ne
| rowspan="3" style="text-align:right" | 10
| rowspan="3" style="text-align:right" | 8
| rowspan="3"|18.0057082(3)
| rowspan="3"|1.672(8) s
| β+
| 18F
| rowspan="3"|0+
| rowspan="3"|
| rowspan="3"|
|-
| 2p
| 16O
|-
| 2He
| 16O, 2He
|-
| 19Ne
| style="text-align:right" | 10
| style="text-align:right" | 9
| 19.0018802(3)
| 17.296(5) s+
| β+
| 19F
| 1/2+
|
|
|-
|
| style="text-align:right" | 10
| style="text-align:right" | 10
| 19.9924401754(19)
| colspan=3 align=center|**'
| 0+
| 0.9048(3)
| 0.8847–0.9051
|-
| 21Ne
| style="text-align:right" | 10
| style="text-align:right" | 11
| 20.99384668(4)
| colspan=3 align=center|穩定
| 3/2+
| 0.0027(1)
| 0.0027–0.0171
|-
| 22Ne
| style="text-align:right" | 10
| style="text-align:right" | 12
| 21.991385114(19)
| colspan=3 align=center|穩定
| 0+
| 0.0925(3)
| 0.0920–0.0996
|-
| 23Ne
| style="text-align:right" | 10
| style="text-align:right" | 13
| 22.99446690(11)
| 37.24(12) s
| β−
| 23Na
| 5/2+
|
|
|-
| 24Ne
| style="text-align:right" | 10
| style="text-align:right" | 14
| 23.9936108(4)
| 3.38(2) min
| β−
| 24Na
| 0+
|
|
|-
| 25Ne
| style="text-align:right" | 10
| style="text-align:right" | 15
| 24.997737(28)
| 602(8) ms
| β−
| 25Na
| (3/2)+
|
|
|-
| rowspan=2|26Ne
| rowspan=2 style="text-align:right" | 10
| rowspan=2 style="text-align:right" | 16
| rowspan=2|26.000461(29)
| rowspan=2|197(1) ms
| β− (99.87%)
| 26Na
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β−, n (.13%)
| 25Na
|-
| rowspan=2|27Ne
| rowspan=2 style="text-align:right" | 10
| rowspan=2 style="text-align:right" | 17
| rowspan=2|27.00759(12)
| rowspan=2|32(2) ms
| β− (98.0%)
| 27Na
| rowspan=2|(3/2+)#
| rowspan=2|
| rowspan=2|
|-
| β−, n (2.0%)
| 26Na
|-
| rowspan=2|28Ne
| rowspan=2 style="text-align:right" | 10
| rowspan=2 style="text-align:right" | 18
| rowspan=2|28.01207(16)
| rowspan=2|18.3(22) ms
| β− (78.0%)
| 28Na
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β−, n (22.0%)
| 27Na
|-
| 29Ne
| style="text-align:right" | 10
| style="text-align:right" | 19
| 29.01939(29)
| 15.6(5) ms
| β−
| 29Na
| (3/2+)#
|
|
|-
| 30Ne
| style="text-align:right" | 10
| style="text-align:right" | 20
| 30.02480(61)
| 5.8(2) ms
| β−
| 30Na
| 0+
|
|
|-
| rowspan=2|31Ne
| rowspan=2 style="text-align:right" | 10
| rowspan=2 style="text-align:right" | 21
| rowspan=2|31.03311(97)#
| rowspan=2|3.4(8) ms
| β−
| 31Na
| rowspan=2|7/2−#
| rowspan=2|
| rowspan=2|
|-
| β−, n
| 30Na
|-
| rowspan=2|32Ne
| rowspan=2 style="text-align:right" | 10
| rowspan=2 style="text-align:right" | 22
| rowspan=2|32.04002(86)#
| rowspan=2|3.5(9) ms
| β−, n
| 31Na
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β−
| 32Na
|-
| 33Ne
| style="text-align:right" | 10
| style="text-align:right" | 23
| 33.04938(86)#
| 34Ne
| style="text-align:right" | 10
| style="text-align:right" | 24
| 34.05703(87)#
| 1# ms [>1.5 µs]
|
|
| 0+
|
|
|}

參考文獻

Isotope masses from [https://web.archive.org/web/20080923134436/http://www.nndc.bnl.gov/amdc/index.html 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 [http://www.iupac.org/publications/pac/2003/7506/7506x0683.html Atomic weights of the elements. Review 2000 (IUPAC Technical Report)] . Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and [http://www.iupac.org/news/archives/2005/atomic-weights_revised05.html 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. [http://amdc.in2p3.fr/web/nubase_en.html 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 [http://www.nndc.bnl.gov/nudat2/ 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.

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