Het chemisch element yttrium (Y), met een atoommassa van 88,90585(2) u, bezit 1 stabiele isotoop: 89Y. Het is tevens de enige in de natuur voorkomende isotoop van dit element, waardoor het valt onder de mononuclidische elementen. De overige 31 radio-isotopen zijn onstabiel en hebben een relatief korte halveringstijd (de meeste minder dan een seconde).
De kortstlevende isotoop van yttrium is 76Y, met een halfwaardetijd van ongeveer 500 nanoseconden. De langstlevende is 88Y, met een halfwaardetijd van 106,65 dagen.
Nuclide | Z (p) | N (n) | Isotopische massa (u) | Halveringstijd | Radioactief verval | VP | Kernspin | Isotopische verhouding (molfractie) |
Natuurlijk voorkomen (molfractie) |
---|---|---|---|---|---|---|---|---|---|
Excitatie-energie | |||||||||
76Y | 39 | 37 | 75,95845(54) | 500 ns | |||||
77Y | 39 | 38 | 76,94965(7) | 63(17) ms | p (> 99,9%) | 76Sr | 5/2+ | ||
β+ (< 0,1%) | 77Sr | ||||||||
78Y | 39 | 39 | 77,94361(43) | 54(5) ms | β+ | 78Sr | (0+) | ||
78mY | 0(500) keV | 5,8(5) s | 5+ | ||||||
79Y | 39 | 40 | 78,93735(48) | 14,8(6) s | β+ (> 99,9%) | 79Sr | (5/2+) | ||
β+, p (< 0,1%) | 78Rb | ||||||||
80Y | 39 | 41 | 79,93428(19) | 30,1(5) s | β+ | 80Sr | 4− | ||
80m1Y | 228,5(1) keV | 4,8(3) s | (1−) | ||||||
80m2Y | 312,6(9) keV | 4,7(3) µs | (2+) | ||||||
81Y | 39 | 42 | 80,92913(7) | 70,4(10) s | β+ | 81Sr | (5/2+) | ||
82Y | 39 | 43 | 81,92679(11) | 8,30(20) s | β+ | 82Sr | 1+ | ||
82m1Y | 402,63(14) keV | 268(25) ns | 4− | ||||||
82m2Y | 507,50(13) keV | 147(7) ns | 6+ | ||||||
83Y | 39 | 44 | 82,92235(5) | 7,08(6) min | β+ | 83Sr | 9/2+ | ||
83mY | 61,98(11) keV | 2,85(2) min | β+ (60%) | 83Sr | (3/2−) | ||||
IT (40%) | 83Y | ||||||||
84Y | 39 | 45 | 83,92039(10) | 4,6(2) s | β+ | 84Sr | 1+ | ||
84mY | −80(190) keV | 39,5(8) min | β+ | 84Sr | (5−) | ||||
85Y | 39 | 46 | 84,916433(20) | 2,68(5) uur | β+ | 85Sr | 1/2− | ||
85m1Y | 19,8(5) keV | 4,86(13) uur | β+ (99,998%) | 85Sr | 9/2+ | ||||
IT (0,002%) | 85Y | ||||||||
85m2Y | 266,30(20) keV | 178(6) ns | 5/2− | ||||||
86Y | 39 | 47 | 85,914886(15) | 14,74(2) uur | β+ | 86Sr | 4− | ||
86m1Y | 218,30(20) keV | 48(1) min | IT (99,31%) | 86Y | (8+) | ||||
β+ (0,69%) | 86Sr | ||||||||
86m2Y | 302,2(5) keV | 125(6) ns | (7−) | ||||||
87Y | 39 | 48 | 86,9108757(17) | 79,8(3) uur | β+ | 87Sr | 1/2− | ||
87mY | 380,82(7) keV | 13,37(3) uur | IT (98,43%) | 87Y | 9/2+ | ||||
β+ (1,56%) | 87Sr | ||||||||
88Y | 39 | 49 | 87,9095011(20) | 106,616(13) dagen | β+ | 88Sr | 4− | ||
88m1Y | 674,55(4) keV | 13,9(2) ms | IT | 88Y | 8+ | ||||
88m2Y | 392,86(9) keV | 300(3) µs | 1+ | ||||||
89Y | 39 | 50 | 88,9058483(27) | stabiel | 1/2− | 1,0000 | |||
89mY | 908,97(3) keV | 15,663(5) s | IT | 89Y | 9/2+ | ||||
90Y | 39 | 51 | 89,9071519(27) | 64,053(20) uur | β− | 90Zr | 2− | ||
90mY | 681,67(10) keV | 3,19(6) uur | IT (99,99%) | 90Y | 7+ | ||||
β− (,0018%) | 90Zr | ||||||||
91Y | 39 | 52 | 90,907305(3) | 58,51(6) dagen | β− | 91Zr | 1/2− | ||
91mY | 555,58(5) keV | 49,71(4) min | IT (98,5%) | 91Y | 9/2+ | ||||
β− (1,5%) | 91Zr | ||||||||
92Y | 39 | 53 | 91,908949(10) | 3,54(1) uur | β− | 92Zr | 2− | ||
93Y | 39 | 54 | 92,909583(11) | 10,18(8) uur | β− | 93Zr | 1/2− | ||
93mY | 758,719(21) keV | 820(40) ms | IT | 93Y | 7/2+ | ||||
94Y | 39 | 55 | 93,911595(8) | 18,7(1) min | β− | 94Zr | 2− | ||
95Y | 39 | 56 | 94,912821(8) | 10,3(1) min | β− | 95Zr | 1/2− | ||
96Y | 39 | 57 | 95,915891(25) | 5,34(5) s | β− | 96Zr | 0− | ||
96mY | 1140(30) keV | 9,6(2) s | β− | 96Zr | 8+ | ||||
97Y | 39 | 58 | 96,918134(13) | 3,75(3) s | β− (99,942%) | 97Zr | (1/2−) | ||
β−, n (0,058%) | 96Zr | ||||||||
97m1Y | 667,51(23) keV | 1,17(3) s | β− (99,3%) | 97Zr | 9/2+ | ||||
IT (0,7%) | 97Y | ||||||||
β−, n (0,08%) | 96Zr | ||||||||
97m2Y | 3523,3(4) keV | 142(8) ms | (27/2−) | ||||||
98Y | 39 | 59 | 97,922203(26) | 0,548(2) s | β− (99,669%) | 98Zr | 0− | ||
β−, n (0,331%) | 97Zr | ||||||||
98m1Y | 170,74(6) keV | 620(80) ns | 2− | ||||||
98m2Y | 410(30) keV | 2,0(2) s | β− (86,6%) | 98Zr | (5+, 4−) | ||||
IT (10%) | 98Y | ||||||||
β−, n (3,4%) | 97Zr | ||||||||
98m3Y | 496,19(15) keV | 7,6(4) µs | (2−) | ||||||
98m4Y | 1181,1(4) keV | 0,83(10) µs | (8−) | ||||||
99Y | 39 | 60 | 98,924636(26) | 1,470(7) s | β− (98,1%) | 99Zr | (5/2+) | ||
β−, n (1,9%) | 98Zr | ||||||||
99mY | 2141,65(19) keV | 8,6(8) µs | (17/2+) | ||||||
100Y | 39 | 61 | 99,92776(8) | 735(7) ms | β− (98,98%) | 100Zr | 1−, 2− | ||
β−, n (1,02%) | 99Zr | ||||||||
100mY | 200(200) keV | 940(30) ms | β− | 100Zr | (3, 4, 5)+ | ||||
101Y | 39 | 62 | 100,93031(10) | 426(20) ms | β− (98,06%) | 101Zr | (5/2+) | ||
β−, n (1,94%) | 100Zr | ||||||||
102Y | 39 | 63 | 101,93356(9) | 0,30(1) s | β− (95,1%) | 102Zr | |||
β−, n (4,9%) | 101Zr | ||||||||
102mY | 200(200) keV | 360(40) ms | β− (94%) | 102Zr | |||||
β−, n (6%) | 101Zr | ||||||||
103Y | 39 | 64 | 102,93673(32) | 224(19) ms | β− (91,7%) | 103Zr | 5/2+ | ||
β−, n (8,3%) | 102Zr | ||||||||
104Y | 39 | 65 | 103,94105(43) | 180(60) ms | β− | 104Zr | |||
105Y | 39 | 66 | 104,94487(54) | 60 ms | β− | 105Zr | 5/2+ | ||
106Y | 39 | 67 | 105,94979(75) | 50 ms | β− | 106Zr | |||
107Y | 39 | 68 | 106,95414(54) | 30 ms | 5/2+ | ||||
108Y | 39 | 69 | 107,95948(86) | 20 ms |
1 | 18 | |||||||||||||||||
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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
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