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Isotopes of neon

From Wikipedia, the free encyclopedia

Isotopes of neon (10Ne)
Main isotopes[1] Decay
abun­dance half-life (t1/2) mode pro­duct
20Ne 90.5% stable
21Ne 0.27% stable
22Ne 9.25% stable
Standard atomic weight Ar°(Ne)
The abundances of the naturally occurring isotopes of neon

Neon (10Ne) possesses three stable isotopes: 20
Ne
, 21
Ne
, and 22
Ne
. In addition, 17 radioactive isotopes have been discovered, ranging from 15
Ne
 to 34
Ne
, all short-lived. The longest-lived is 24
Ne
 with a half-life of 3.38(2) min. All others are under a minute, most under a second. The least stable is 15
Ne
 with a half-life of 770(300) ys (7.7(3.0)×10−22 s). See isotopes of carbon for notes about the measurement. Light radioactive neon isotopes usually decay to fluorine or oxygen, while heavier ones decay to sodium.

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  • What are Isotopes? | Chemistry
  • Protons Neutrons Electrons Isotopes - Average Mass Number & Atomic Structure - Atoms vs Ions

Transcription

List of isotopes

Nuclide
[n 1] 		Z N Isotopic mass (Da)[4]
[n 2][n 3] 		Half-life[1]

[resonance width] 		Decay
mode[1]
[n 4] 		Daughter
isotope
[n 5] 		Spin and
parity[1]
[n 6] 		Natural abundance (mole fraction)
Excitation energy Normal proportion[1] Range of variation
15
Ne
[5] 		10 5 15.043170(70) 770(300) ys
[590(230) keV] 		2p 13
O
 		(3/2−)
16
Ne
 		10 6 16.025751(22) > 5.7 zs
[< 80 keV] 		2p 14
O
 		0+
17
Ne
[n 7] 		10 7 17.0177140(4) 109.2(6) ms β+p (94.4(2.9)%) 16
O
 		1/2−
β+α (3.51(1)%) 13
N
β+ (2.1(2.9)%) 17
F
β+pα (0.014(4)%) 12
C
18
Ne
 		10 8 18.0057087(4) 1664.20(47) ms β+ 18
F
 		0+
19
Ne
 		10 9 19.00188091(17) 17.2569(19) s β+ 19
F
 		1/2+
20
Ne
 		10 10 19.9924401753(16) Stable 0+ 0.9048(3) [0.8847, 0.9051][6]
21
Ne
 		10 11 20.99384669(4) Stable 3/2+ 0.0027(1) [0.0027, 0.0171][6]
22
Ne
 		10 12 21.991385114(19) Stable 0+ 0.0925(3) [0.0920, 0.0996][6]
23
Ne
 		10 13 22.99446691(11) 37.15(3) s β− 23
Na
 		5/2+
24
Ne
 		10 14 23.9936106(6) 3.38(2) min β− 24m
Na
 		0+
25
Ne
 		10 15 24.997810(30) 602(8) ms β− 25
Na
 		1/2+
26
Ne
 		10 16 26.000516(20) 197(2) ms β− (99.87(3)%) 26
Na
 		0+
β−n (0.13(3)%) 25
Na
27
Ne
 		10 17 27.007570(100) 30.9(1.1) ms β− (98.0(5)%) 27
Na
 		(3/2+)
β−n (2.0(5)%) 26
Na
β−2n ?[n 8] 25
Na
 ?
28
Ne
 		10 18 28.012130(140) 18.8(2) ms β− (84.3(1.1)%) 28
Na
 		0+
β−n (12(1)%) 27
Na
β−2n (3.7(5)%) 26
Na
29
Ne
 		10 19 29.019750(160) 14.7(4) ms β− (68.0(5.1)%) 29
Na
 		(3/2−)
β−n (28(5)%) 28
Na
β−2n (4(1)%) 27
Na
30
Ne
 		10 20 30.024990(270) 7.22(18) ms β− (78.1(4.6)%) 30
Na
 		0+
β−n (13(4)%) 29
Na
β−2n (8.9(2.3)%) 28
Na
31
Ne
 		10 21 31.033470(290) 3.4(8) ms β− 31
Na
 		(3/2−)
β−n ?[n 8] 30
Na
 ?
β−2n ?[n 8] 29
Na
 ?
32
Ne
 		10 22 32.039720(540)# 3.5(9) ms β− 32
Na
 		0+
β−n ?[n 8] 31
Na
 ?
β−2n ?[n 8] 30
Na
 ?
33
Ne
?[n 9] 		10 23 33.049520(640)# < 260 ns n ?[n 8] 32
Ne
 		7/2−#
34
Ne
 		10 24 34.056730(550)# 2 ms# [> 1.5 μs] β− ?[n 8] 34
Na
 		0+
β−2n ?[n 8] 32
Ne
 ?
β−n ?[n 8] 33
Ne
 ?
This table header & footer:
  1. ^ mNe – Excited nuclear isomer.
  2. ^ ( ) – Uncertainty (1σ) is given in concise form in parentheses after the corresponding last digits.
  3. ^ # – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).
  4. ^ Modes of decay:
    n: Neutron emission
    p: Proton emission
  5. ^ Bold symbol as daughter – Daughter product is stable.
  6. ^ ( ) spin value – Indicates spin with weak assignment arguments.
  7. ^ Has 2 halo protons.
  8. ^ a b c d e f g h i Decay mode shown is energetically allowed, but has not been experimentally observed to occur in this nuclide.
  9. ^ This isotope has not yet been observed; given data is inferred or estimated from periodic trends.
  • The isotopic composition refers to that in air.

References

  1. ^ a b c d e Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
  2. ^ "Standard Atomic Weights: Neon". CIAAW. 1985.
  3. ^ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN 1365-3075.
  4. ^ Wang, Meng; Huang, W.J.; Kondev, F.G.; Audi, G.; Naimi, S. (2021). "The AME 2020 atomic mass evaluation (II). Tables, graphs and references*". Chinese Physics C. 45 (3): 030003. doi:10.1088/1674-1137/abddaf.
  5. ^ Wamers, F.; Marganiec, J.; Aksouh, F.; Aksyutina, Yu.; Álvarez-Pol, H.; Aumann, T.; Beceiro-Novo, S.; Boretzky, K.; Borge, M. J. G.; Chartier, M.; Chatillon, A.; Chulkov, L. V.; Cortina-Gil, D.; Emling, H.; Ershova, O.; Fraile, L. M.; Fynbo, H. O. U.; Galaviz, D.; Geissel, H.; Heil, M.; Hoffmann, D. H. H.; Johansson, H. T.; Jonson, B.; Karagiannis, C.; Kiselev, O. A.; Kratz, J. V.; Kulessa, R.; Kurz, N.; Langer, C.; Lantz, M.; Le Bleis, T.; Lemmon, R.; Litvinov, Yu. A.; Mahata, K.; Müntz, C.; Nilsson, T.; Nociforo, C.; Nyman, G.; Ott, W.; Panin, V.; Paschalis, S.; Perea, A.; Plag, R.; Reifarth, R.; Richter, A.; Rodriguez-Tajes, C.; Rossi, D.; Riisager, K.; Savran, D.; Schrieder, G.; Simon, H.; Stroth, J.; Sümmerer, K.; Tengblad, O.; Weick, H.; Wimmer, C.; Zhukov, M. V. (4 April 2014). "First Observation of the Unbound Nucleus 15Ne" (PDF). Physical Review Letters. 112 (13): 132502. doi:10.1103/PhysRevLett.112.132502. PMID 24745409 – via APS.
  6. ^ a b c Meija, Juris; Coplen, Tyler B.; Berglund, Michael; Brand, Willi A.; Bièvre, Paul De; Gröning, Manfred; Holden, Norman E.; Irrgeher, Johanna; Loss, Robert D.; Walczyk, Thomas; Prohaska, Thomas (2016-03-01). "Isotopic compositions of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 293–306. doi:10.1515/pac-2015-0503. hdl:11858/00-001M-0000-0029-C408-7. ISSN 1365-3075. S2CID 104472050.
This page was last edited on 6 January 2024, at 01:01
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