Isotopen van natrium
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Het chemisch element natrium (Na), met een atoommassa van 22,98976928(2) u, kent in totaal 13 isotopen, waarvan enkel 23Na stabiel is. 22Na en 24Na zijn de enige nog van nature aanwezige radioactieve isotopen. Alle andere isotopen kunnen alleen op kunstmatige wijze worden verkregen.
Overzicht[bewerken]
| Nuclide | Z (p) | N (n) | Isotopische massa (u) | Halveringstijd | Radioactief verval | VP | Kernspin | Isotopische verhouding (molfractie) |
Natuurlijk voorkomen (molfractie) |
|---|---|---|---|---|---|---|---|---|---|
| Excitatie-energie | |||||||||
| 18Na | 11 | 7 | 18,02597(5) | 1,3(4) × 10−21 s | p (> 99,9%) | 17Ne | (1–) | ||
| β+ (< 0,1%) | 18Ne | ||||||||
| 19Na | 11 | 8 | 19,013877(13) | < 40 ns | p | 18Ne | (5/2+) | ||
| 20Na | 11 | 9 | 20,007351(7) | 447,9(23) ms | β+ (75%) | 20Ne | 2+ | ||
| β+, α (25%) | 16O | ||||||||
| 21Na | 11 | 10 | 20,9976552(8) | 22,49(4) s | β+ | 21Ne | 3/2+ | ||
| 22Na | 11 | 11 | 21,9944364(4) | 2,6027(10) jaar | β+ | 22Ne | 3+ | sporen | |
| 22mNa | 583,03(9) keV | 244(6) ns | 1+ | ||||||
| 23Na | 11 | 12 | 22,9897692809(29) | stabiel | 3/2+ | 1,0000 | |||
| 24Na | 11 | 13 | 23,99096278(8) | 14,9590(12) uur | β– | 24Mg | 4+ | sporen | |
| 24mNa | 472,207(9) keV | 20,20(7) ms | IT (99,95%) | 24Na | 1+ | ||||
| β− (0,05%) | 24Mg | ||||||||
| 25Na | 11 | 14 | 24,9899540(13) | 59,1(6) s | β− | 25Mg | 5/2+ | ||
| 26Na | 11 | 15 | 25,992633(6) | 1,077(5) s | β− | 26Mg | 3+ | ||
| 27Na | 11 | 16 | 26,994077(4) | 301(6) ms | β− (99,87%) | 27Mg | 5/2+ | ||
| β−, n (,13%) | 26Mg | ||||||||
| 28Na | 11 | 17 | 27,998938(14) | 30,5(4) ms | β− (99,421%) | 28Mg | 1+ | ||
| β−, n (0,579%) | 27Mg | ||||||||
| 29Na | 11 | 18 | 29,002861(14) | 44,9(12) ms | β− (74,09%) | 29Mg | 3/2+ | ||
| β−, n (25,91%) | 28Mg | ||||||||
| 30Na | 11 | 19 | 30,008976(27) | 48,4(17) ms | β− (68,83%) | 30Mg | 2+ | ||
| β−, n (30,0%) | 29Mg | ||||||||
| β−, 2n (1,17%) | 28Mg | ||||||||
| β−, α | 26Ne | ||||||||
| 31Na | 11 | 20 | 31,01359(23) | 17,0(4) ms | β− (62,05%) | 31Mg | (3/2+) | ||
| β−, n | 30Mg | ||||||||
| β−, 2n | 29Mg | ||||||||
| β−, 3n | 28Mg | ||||||||
| 32Na | 11 | 21 | 32,02047(38) | 12,9(7) ms | β− | 32Mg | (3–, 4–) | ||
| β−, n | 31Mg | ||||||||
| β−, 2n | 30Mg | ||||||||
| 33Na | 11 | 22 | 33,02672(94) | 8,2(2) ms | β−, n (52,0%) | 32Mg | 3/2+ | ||
| β− (36,0%) | 33Mg | ||||||||
| β−, 2n (12,0%) | 31Mg | ||||||||
| 34Na | 11 | 23 | 34,03517(96) | 5,5(10) ms | β−, 2n (50,0%) | 32Mg | 1+ | ||
| β− (35,0%) | 34Mg | ||||||||
| β−, n (15,0%) | 33Mg | ||||||||
| 35Na | 11 | 24 | 35,04249(102) | 1,5(5) ms | β− (> 99,9%) | 35Mg | 3/2+ | ||
| β−, n (< 0,1%) | 34Mg | ||||||||
| 36Na | 11 | 25 | 36,05148(102) | < 260 ns | |||||
| 37Na | 11 | 26 | 37,05934(103) | 1 ms [> 1,5 µs] | 3/2+ | ||||
Overzicht van isotopen per element[bewerken]
| H | He | ||||||||||||||||
| Li | Be | B | C | N | O | F | Ne | ||||||||||
| Na | Mg | Al | Si | P | S | Cl | Ar | ||||||||||
| K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr |
| Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | Te | I | Xe |
| Cs | Ba | * | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | Tl | Pb | Bi | Po | At | Rn |
| Fr | Ra | ** | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Uut | Fl | Uup | Lv | Uus | Uuo |
| * | La | Ce | Pr | Nd | Pm | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu |
| ** | Ac | Th | Pa | U | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr |
Bronnen, noten en/of referenties
|
| Isotopen van natrium (Na) |
|---|
|
18Na · 19Na · 20Na · 21Na · 22Na · 23Na · 24Na · 25Na · 26Na · 27Na · 28Na · 29Na · 30Na · 31Na · 32Na · 33Na · 34Na · 35Na · 36Na · 37Na |
