Isotopen van neon
Het chemisch element neon (Ne), met een atoommassa van 20,1797(6) u, bezit 3 stabiele isotopen: 20Ne, 21Ne en 22Ne, waarvan de eerste het meest abundant is (ongeveer 90%). De overige 16 radio-isotopen zijn onstabiel en hebben een relatief korte halveringstijd.
De kortstlevende radio-isotoop van neon is 16Ne, met een halfwaardetijd van amper 9 × 10−21 s. De langstlevende is 24Ne, met een halfwaardetijd van 3,38 minuten. Vrijwel alle andere isotopen vervallen binnen de seconde.
Overzicht
bewerken| Nuclide | Z (p) | N (n) | Isotopische massa (u) | Halveringstijd | Radioactief verval | VP | VE | Kernspin | Isotopische verhouding (molfractie) |
Natuurlijk voorkomen (molfractie) |
|---|---|---|---|---|---|---|---|---|---|---|
| 16Ne | 10 | 6 | 16,025761(22) | 9 × 10−21 s | 2p | 122(37) keV | 14O | 0+ | ||
| 17Ne | 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 | β+ | 18F | 0+ | |||
| 2p | 16O | |||||||||
| 19Ne | 10 | 9 | 19,0018802(3) | 17,296(5) s | β+ | 19F | 1/2+ | |||
| 20Ne | 10 | 10 | 19,9924401754(19) | stabiel | 0+ | 0,9048(3) | 0,8847 - 0,9051 | |||
| 21Ne | 10 | 11 | 20,99384668(4) | stabiel | 3/2+ | 0,0027(1) | 0,0027 - 0,0171 | |||
| 22Ne | 10 | 12 | 21,991385114(19) | stabiel | 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 (0,13%) | 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 | 0+ | |||||
Overzicht van isotopen per element
bewerken| 1 | 18 | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | H | 2 | Periodiek systeem | 13 | 14 | 15 | 16 | 17 | He | |||||||||
| 2 | Li | Be | De links verwijzen naar isotopen per element | B | C | N | O | F | Ne | |||||||||
| 3 | Na | Mg | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | Al | Si | P | S | Cl | Ar |
| 4 | K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr |
| 5 | Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | Te | I | Xe |
| 6 | Cs | Ba | ↓ | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | Tl | Pb | Bi | Po | At | Rn |
| 7 | Fr | Ra | ↓↓ | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og |
| Lanthaniden | La | Ce | Pr | Nd | Pm | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | |||
| Actiniden | Ac | Th | Pa | U | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr | |||
Bronnen, noten en/of referenties
- (en) R.B. Firestone, S.Y. Frank Chu & C.M. Baglin (1999) - Table of Isotopes (online versie van de cd-rom)
- (en) G. Audi, A.H. Wapstra, C. Thibault, J. Blachot & O. Bersillon (2003) - The NUBASE evaluation of nuclear and decay properties, Nuclear Physics A, 729, pp. 3-128
- (en) J.R. de Laeter, J.K. Böhlke, P. De Bièvre, H. Hidaka, H.S. Peiser, K.J.R. Rosman & P.D.P. Taylor (2003) - Atomic weights of the elements. Review 2000 (IUPAC Technical Report), Pure and Applied Chemistry, 75 (6), pp. 683–800
- (en) M.E. Wieser (2006) - Atomic weights of the elements 2005 (IUPAC Technical Report), Pure and Applied Chemistry, 78 (11), pp. 2051–2066
- (en) David R. Lide (2004) - CRC Handbook of Chemistry and Physics (85th ed.), hoofdstuk 11, CRC Press - ISBN 978-0849304859