# Isotopen van yttrium

Het chemisch element yttrium (Y), met een atoommassa van 88,90585(2) u, bezit 1 stabiele isotoop: $^{89}$Y. 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 $^{76}$Y, met een halfwaardetijd van ongeveer 500 nanoseconden. De langstlevende is $^{88}$Y, met een halfwaardetijd van 106,65 dagen.

## Overzicht

| Nuclide | Z (p) | N (n) | Isotopische massa (u) | Halveringstijd | Radioactief verval | VP | Kernspin | Isotopische verhouding (molfractie) |
| Natuurlijk voorkomen (molfractie) |||
| $^{76}$Y | 39 | 37 | 75,95845(54) | 500 ns | | | | |
| $^{77}$Y | 39 | 38 | 76,94965(7) | 63(17) ms | p (> 99,9%) | $^{76}$Sr | 5/2$^+$ | |
| $^{77}$Y | 39 | 38 | 76,94965(7) | 63(17) ms | β$^+$ (< 0,1%) | $^{77}$Sr | 5/2$^+$ | |
| $^{78}$Y | 39 | 39 | 77,94361(43) | 54(5) ms | β$^+$ | $^{78}$Sr | (0$^+$) | |
| $^{78m}$Y | 0(500) keV | 0(500) keV | 0(500) keV | 5,8(5) s | | | 5$^+$ | |
| $^{79}$Y | 39 | 40 | 78,93735(48) | 14,8(6) s | β$^+$ (> 99,9%) | $^{79}$Sr | (5/2$^+$) | |
| $^{79}$Y | 39 | 40 | 78,93735(48) | 14,8(6) s | β$^+$, p (< 0,1%) | $^{78}$Rb | (5/2$^+$) | |
| $^{80}$Y | 39 | 41 | 79,93428(19) | 30,1(5) s | β$^+$ | $^{80}$Sr | 4$^−$ | |
| $^{80m1}$Y | 228,5(1) keV | 228,5(1) keV | 228,5(1) keV | 4,8(3) s | | | (1$^−$) | |
| $^{80m2}$Y | 312,6(9) keV | 312,6(9) keV | 312,6(9) keV | 4,7(3) µs | | | (2$^+$) | |
| $^{81}$Y | 39 | 42 | 80,92913(7) | 70,4(10) s | β$^+$ | $^{81}$Sr | (5/2$^+$) | |
| $^{82}$Y | 39 | 43 | 81,92679(11) | 8,30(20) s | β$^+$ | $^{82}$Sr | 1$^+$ | |
| $^{82m1}$Y | 402,63(14) keV | 402,63(14) keV | 402,63(14) keV | 268(25) ns | | | 4$^−$ | |
| $^{82m2}$Y | 507,50(13) keV | 507,50(13) keV | 507,50(13) keV | 147(7) ns | | | 6$^+$ | |
| $^{83}$Y | 39 | 44 | 82,92235(5) | 7,08(6) min | β$^+$ | $^{83}$Sr | 9/2$^+$ | |
| $^{83m}$Y | 61,98(11) keV | 61,98(11) keV | 61,98(11) keV | 2,85(2) min | β$^+$ (60%) | $^{83}$Sr | (3/2$^−$) | |
| $^{83m}$Y | 61,98(11) keV | 61,98(11) keV | 61,98(11) keV | 2,85(2) min | IT (40%) | $^{83}$Y | (3/2$^−$) | |
| $^{84}$Y | 39 | 45 | 83,92039(10) | 4,6(2) s | β$^+$ | $^{84}$Sr | 1$^+$ | |
| $^{84m}$Y | −80(190) keV | −80(190) keV | −80(190) keV | 39,5(8) min | β$^+$ | $^{84}$Sr | (5$^−$) | |
| $^{85}$Y | 39 | 46 | 84,916433(20) | 2,68(5) uur | β$^+$ | $^{85}$Sr | 1/2$^−$ | |
| $^{85m1}$Y | 19,8(5) keV | 19,8(5) keV | 19,8(5) keV | 4,86(13) uur | β$^+$ (99,998%) | $^{85}$Sr | 9/2$^+$ | |
| $^{85m1}$Y | 19,8(5) keV | 19,8(5) keV | 19,8(5) keV | 4,86(13) uur | IT (0,002%) | $^{85}$Y | 9/2$^+$ | |
| $^{85m2}$Y | 266,30(20) keV | 266,30(20) keV | 266,30(20) keV | 178(6) ns | | | 5/2$^−$ | |
| $^{86}$Y | 39 | 47 | 85,914886(15) | 14,74(2) uur | β$^+$ | $^{86}$Sr | 4$^−$ | |
| $^{86m1}$Y | 218,30(20) keV | 218,30(20) keV | 218,30(20) keV | 48(1) min | IT (99,31%) | $^{86}$Y | (8$^+$) | |
| $^{86m1}$Y | 218,30(20) keV | 218,30(20) keV | 218,30(20) keV | 48(1) min | β$^+$ (0,69%) | $^{86}$Sr | (8$^+$) | |
| $^{86m2}$Y | 302,2(5) keV | 302,2(5) keV | 302,2(5) keV | 125(6) ns | | | (7$^−$) | |
| $^{87}$Y | 39 | 48 | 86,9108757(17) | 79,8(3) uur | β$^+$ | $^{87}$Sr | 1/2$^−$ | |
| $^{87m}$Y | 380,82(7) keV | 380,82(7) keV | 380,82(7) keV | 13,37(3) uur | IT (98,43%) | $^{87}$Y | 9/2$^+$ | |
| $^{87m}$Y | 380,82(7) keV | 380,82(7) keV | 380,82(7) keV | 13,37(3) uur | β$^+$ (1,56%) | $^{87}$Sr | 9/2$^+$ | |
| $^{88}$Y | 39 | 49 | 87,9095011(20) | 106,616(13) dagen | β$^+$ | $^{88}$Sr | 4$^−$ | |
| $^{88m1}$Y | 674,55(4) keV | 674,55(4) keV | 674,55(4) keV | 13,9(2) ms | IT | $^{88}$Y | 8$^+$ | |
| $^{88m2}$Y | 392,86(9) keV | 392,86(9) keV | 392,86(9) keV | 300(3) µs | | | 1$^+$ | |
| $^{89}$Y | 39 | 50 | 88,9058483(27) | stabiel | stabiel | stabiel | 1/2$^−$ | 1,0000 |
| $^{89m}$Y | 908,97(3) keV | 908,97(3) keV | 908,97(3) keV | 15,663(5) s | IT | $^{89}$Y | 9/2$^+$ | |
| $^{90}$Y | 39 | 51 | 89,9071519(27) | 64,053(20) uur | β$^−$ | $^{90}$Zr | 2$^−$ | |
| $^{90m}$Y | 681,67(10) keV | 681,67(10) keV | 681,67(10) keV | 3,19(6) uur | IT (99,99%) | $^{90}$Y | 7$^+$ | |
| $^{90m}$Y | 681,67(10) keV | 681,67(10) keV | 681,67(10) keV | 3,19(6) uur | β$^−$ (,0018%) | $^{90}$Zr | 7$^+$ | |
| $^{91}$Y | 39 | 52 | 90,907305(3) | 58,51(6) dagen | β$^−$ | $^{91}$Zr | 1/2$^−$ | |
| $^{91m}$Y | 555,58(5) keV | 555,58(5) keV | 555,58(5) keV | 49,71(4) min | IT (98,5%) | $^{91}$Y | 9/2$^+$ | |
| $^{91m}$Y | 555,58(5) keV | 555,58(5) keV | 555,58(5) keV | 49,71(4) min | β$^−$ (1,5%) | $^{91}$Zr | 9/2$^+$ | |
| $^{92}$Y | 39 | 53 | 91,908949(10) | 3,54(1) uur | β$^−$ | $^{92}$Zr | 2$^−$ | |
| $^{93}$Y | 39 | 54 | 92,909583(11) | 10,18(8) uur | β$^−$ | $^{93}$Zr | 1/2$^−$ | |
| $^{93m}$Y | 758,719(21) keV | 758,719(21) keV | 758,719(21) keV | 820(40) ms | IT | $^{93}$Y | 7/2$^+$ | |
| $^{94}$Y | 39 | 55 | 93,911595(8) | 18,7(1) min | β$^−$ | $^{94}$Zr | 2$^−$ | |
| $^{95}$Y | 39 | 56 | 94,912821(8) | 10,3(1) min | β$^−$ | $^{95}$Zr | 1/2$^−$ | |
| $^{96}$Y | 39 | 57 | 95,915891(25) | 5,34(5) s | β$^−$ | $^{96}$Zr | 0$^−$ | |
| $^{96m}$Y | 1140(30) keV | 1140(30) keV | 1140(30) keV | 9,6(2) s | β$^−$ | $^{96}$Zr | 8$^+$ | |
| $^{97}$Y | 39 | 58 | 96,918134(13) | 3,75(3) s | β$^−$ (99,942%) | $^{97}$Zr | (1/2$^−$) | |
| $^{97}$Y | 39 | 58 | 96,918134(13) | 3,75(3) s | β$^−$, n (0,058%) | $^{96}$Zr | (1/2$^−$) | |
| $^{97m1}$Y | 667,51(23) keV | 667,51(23) keV | 667,51(23) keV | 1,17(3) s | β$^−$ (99,3%) | $^{97}$Zr | 9/2$^+$ | |
| $^{97m1}$Y | 667,51(23) keV | 667,51(23) keV | 667,51(23) keV | 1,17(3) s | IT (0,7%) | $^{97}$Y | 9/2$^+$ | |
| $^{97m1}$Y | 667,51(23) keV | 667,51(23) keV | 667,51(23) keV | 1,17(3) s | β$^−$, n (0,08%) | $^{96}$Zr | 9/2$^+$ | |
| $^{97m2}$Y | 3523,3(4) keV | 3523,3(4) keV | 3523,3(4) keV | 142(8) ms | | | (27/2$^−$) | |
| $^{98}$Y | 39 | 59 | 97,922203(26) | 0,548(2) s | β$^−$ (99,669%) | $^{98}$Zr | 0$^−$ | |
| $^{98}$Y | 39 | 59 | 97,922203(26) | 0,548(2) s | β$^−$, n (0,331%) | $^{97}$Zr | 0$^−$ | |
| $^{98m1}$Y | 170,74(6) keV | 170,74(6) keV | 170,74(6) keV | 620(80) ns | | | 2$^−$ | |
| $^{98m2}$Y | 410(30) keV | 410(30) keV | 410(30) keV | 2,0(2) s | β$^−$ (86,6%) | $^{98}$Zr | (5$^+$, 4$^−$) | |
| $^{98m2}$Y | 410(30) keV | 410(30) keV | 410(30) keV | 2,0(2) s | IT (10%) | $^{98}$Y | (5$^+$, 4$^−$) | |
| $^{98m2}$Y | 410(30) keV | 410(30) keV | 410(30) keV | 2,0(2) s | β$^−$, n (3,4%) | $^{97}$Zr | (5$^+$, 4$^−$) | |
| $^{98m3}$Y | 496,19(15) keV | 496,19(15) keV | 496,19(15) keV | 7,6(4) µs | | | (2$^−$) | |
| $^{98m4}$Y | 1181,1(4) keV | 1181,1(4) keV | 1181,1(4) keV | 0,83(10) µs | | | (8$^−$) | |
| $^{99}$Y | 39 | 60 | 98,924636(26) | 1,470(7) s | β$^−$ (98,1%) | $^{99}$Zr | (5/2$^+$) | |
| $^{99}$Y | 39 | 60 | 98,924636(26) | 1,470(7) s | β$^−$, n (1,9%) | $^{98}$Zr | (5/2$^+$) | |
| $^{99m}$Y | 2141,65(19) keV | 2141,65(19) keV | 2141,65(19) keV | 8,6(8) µs | | | (17/2$^+$) | |
| $^{100}$Y | 39 | 61 | 99,92776(8) | 735(7) ms | β$^−$ (98,98%) | $^{100}$Zr | 1$^−$, 2$^−$ | |
| $^{100}$Y | 39 | 61 | 99,92776(8) | 735(7) ms | β$^−$, n (1,02%) | $^{99}$Zr | 1$^−$, 2$^−$ | |
| $^{100m}$Y | 200(200) keV | 200(200) keV | 200(200) keV | 940(30) ms | β$^−$ | $^{100}$Zr | (3, 4, 5)$^+$ | |
| $^{101}$Y | 39 | 62 | 100,93031(10) | 426(20) ms | β$^−$ (98,06%) | $^{101}$Zr | (5/2$^+$) | |
| $^{101}$Y | 39 | 62 | 100,93031(10) | 426(20) ms | β$^−$, n (1,94%) | $^{100}$Zr | (5/2$^+$) | |
| $^{102}$Y | 39 | 63 | 101,93356(9) | 0,30(1) s | β$^−$ (95,1%) | $^{102}$Zr | | |
| $^{102}$Y | 39 | 63 | 101,93356(9) | 0,30(1) s | β$^−$, n (4,9%) | $^{101}$Zr | | |
| $^{102m}$Y | 200(200) keV | 200(200) keV | 200(200) keV | 360(40) ms | β$^−$ (94%) | $^{102}$Zr | | |
| $^{102m}$Y | 200(200) keV | 200(200) keV | 200(200) keV | 360(40) ms | β$^−$, n (6%) | $^{101}$Zr | | |
| $^{103}$Y | 39 | 64 | 102,93673(32) | 224(19) ms | β$^−$ (91,7%) | $^{103}$Zr | 5/2$^+$ | |
| $^{103}$Y | 39 | 64 | 102,93673(32) | 224(19) ms | β$^−$, n (8,3%) | $^{102}$Zr | 5/2$^+$ | |
| $^{104}$Y | 39 | 65 | 103,94105(43) | 180(60) ms | β$^−$ | $^{104}$Zr | | |
| $^{105}$Y | 39 | 66 | 104,94487(54) | 60 ms | β$^−$ | $^{105}$Zr | 5/2$^+$ | |
| $^{106}$Y | 39 | 67 | 105,94979(75) | 50 ms | β$^−$ | $^{106}$Zr | | |
| $^{107}$Y | 39 | 68 | 106,95414(54) | 30 ms | | | 5/2$^+$ | |
| $^{108}$Y | 39 | 69 | 107,95948(86) | 20 ms | | | | |
$^{75}$Y · $^{76}$Y · $^{77}$Y · $^{78}$Y · $^{78m}$Y · $^{79}$Y · $^{80}$Y · $^{80m1}$Y · $^{80m2}$Y · $^{81}$Y · $^{82}$Y · $^{82m1}$Y · $^{82m2}$Y · $^{83}$Y · $^{83m}$Y · $^{84}$Y · $^{84m}$Y · $^{85}$Y · $^{85m1}$Y · $^{85m2}$Y · $^{86}$Y · $^{86m1}$Y · $^{86m2}$Y · $^{87}$Y · $^{87m}$Y · $^{88}$Y · $^{88m1}$Y · $^{88m2}$Y · $^{89}$Y · $^{89m}$Y · $^{90}$Y · $^{90m}$Y · $^{91}$Y · $^{91m}$Y · $^{92}$Y · $^{93}$Y · $^{93m}$Y · $^{94}$Y · $^{95}$Y · $^{96}$Y · $^{96m}$Y · $^{97}$Y · $^{97m1}$Y · $^{97m2}$Y · $^{98}$Y · $^{98m1}$Y · $^{98m2}$Y · $^{98m3}$Y · $^{98m4}$Y · $^{99}$Y · $^{99m}$Y · $^{100}$Y · $^{100m}$Y · $^{101}$Y · $^{102}$Y · $^{102m}$Y · $^{103}$Y · $^{104}$Y · $^{105}$Y · $^{106}$Y · $^{107}$Y · $^{108}$Y · $^{109}$Y

## Overzicht van isotopen per element

* (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