# Liste der Isotope/Ordnungszahl 31 bis Ordnungszahl 40

Liste der Isotope ist die Übersichtsseite, um komfortabel auf alle Elemente zugreifen zu können. Dort wird auch der Aufbau erklärt und die Legende zur Tabelle ist auch dort zu finden. Zerfallsenergien wurden mit den angegebenen Massen und dem Masse-Energie-Äquivalent von $\textstyle \Delta m=931{,}4940954{\frac {\mathrm {MeV} }{\mathrm {u} }}$ neu berechnet.

## $_{31}$ Gallium

| Iso­top | Halbwerts­zeit | Zerfallsenergie (MeV) | Spin / Parität | Zerfallsart(en) (%) | NH (%) | Masse (u) |
| $^{56}$Ga | | 3,311 | | p = 100? | | 55,995 36(64#) |
| $^{57}$Ga | | 2,641 | | p = 100? | | 56,983 20(32#) |
| $^{58}$Ga | | 1,765 | | p = 100? | | 57,974 78(21#) |
| $^{59}$Ga | < 43 ns | 1,038 | | p = 100? | | 58,963 53(18#) |
| $^{60}$Ga | 70 ms | 14,39 (ε), 9,285 (β$^+$p), 11,698 (β$^+$α) | 2+ | ε = 98,4, β$^+$p = 1,6, β$^+$α = 2,5·10$^{−3}$ | | 59,957 29(21#) |
| $^{61}$Ga | 167 ms | 9,214 | 3/2− | ε | | 60,949 399(41) |
| $^{62}$Ga | 116,121 ms | 9,181 | 0+ | ε | | 61,944 190 25(75) |
| $^{63}$Ga | 32,4 s | 5,666 | 3/2− | ε | | 62,939 2942(14) |
| $^{64}$Ga | 2,627 min | 7,171 | 0+ | ε | | 63,936 8404(15) |
| $^{64m1}$Ga | 21,9 µs | 0,04169 | 2+ | IT | | 63,936 885 16 |
| $^{65}$Ga | 15,2 min | 3,255 | 3/2− | ε | | 64,932 734 59(88) |
| $^{66}$Ga | 9,49 h | 5,175 | 0+ | ε | | 65,931 5894(34) |
| $^{67}$Ga | 3,2617 d | 1,001 | 3/2− | ε | | 66,928 2025(13) |
| $^{68}$Ga | 67,71 min | 2,921 | 1+ | ε | | 67,927 9805(16) |
| $^{69}$Ga | stabil | | 3/2− | | 060,108 | 68,925 5735(13) |
| $^{70}$Ga | 21,14 min | 1,652 (β$^−$), 0,65456 (ε) | 1+ | β$^−$ = 99,59, ε = 0,41 | | 69,926 0219(13) |
| $^{71}$Ga | stabil | | 3/2− | | 039,892 | 70,924 702 58(87) |
| $^{72}$Ga | 14,1 h | 3,998 | 3− | β$^−$ | | 71,926 367 47(88) |
| $^{72m1}$Ga | 39,68 ms | 0,11856 | 0+ | IT | | 71,926 494 75 |
| $^{73}$Ga | 4,86 h | 1,598 | 3/2− | β$^−$ | | 72,925 1747(18) |
| $^{74}$Ga | 8,12 min | 5,373 | 3− | β$^−$ | | 73,926 9457(32) |
| $^{74m1}$Ga | 9,5 s | 0,06004 (IT), 5,433 (β$^−$) | 0 | IT = 75, β$^−$ = 25 | | 73,927 010 16 |
| $^{75}$Ga | 126 s | 3,392 | 3/2− | β$^−$ | | 74,926 5002(26) |
| $^{76}$Ga | 32,6 s | 6,916 | 3+ | β$^−$ | | 75,928 8276(21) |
| $^{77}$Ga | 13,2 s | 5,221 | 3/2− | β$^−$ | | 76,929 1543(26) |
| $^{78}$Ga | 5,09 s | 8,156 | 3+ | β$^−$ | | 77,931 6088(20) |
| $^{79}$Ga | 2,847 s | 6,979 (β$^−$), 1,243 (β$^−$n) | 3/2− | β$^−$ = 99,91, β$^−$n = 0,09 | | 78,932 8523(20) |
| $^{80}$Ga | 1,676 s | 10,312 (β$^−$), 2,232 (β$^−$n) | 3 | β$^−$ = 99,14, β$^−$n = 0,86 | | 79,936 4208(31) |
| $^{81}$Ga | 1,217 s | 8,664 (β$^−$), 3,836 (β$^−$n) | 5/2− | β$^−$ = 88,1, β$^−$n = 11,9 | | 80,938 1338(35) |
| $^{82}$Ga | 0,599 s | 12,484 (β$^−$), 5,29 (β$^−$n) | 3+ | β$^−$ = 80,2, β$^−$n = 19,8 | | 81,943 1765(26) |
| $^{83}$Ga | 308,1 ms | 11,719 (β$^−$), 8,087 (β$^−$n) | 3/2− | β$^−$ = 37,2, β$^−$n = 62,8 | | 82,947 1203(28) |
| $^{84}$Ga | 85 ms | 13,865 (β$^−$), 8,622 (β$^−$n) | 0 | β$^−$ = 26, β$^−$n = 74 | | 83,952 46(43#) |
| $^{85}$Ga | 92 ms | 13,06 (β$^−$), 10,014 (β$^−$n) | 3/2− | β$^−$ < 65, β$^−$n > 35 | | 84,956 99(32#) |
| $^{86}$Ga | 43 ms | 15,305 (β$^−$), 10,961 (β$^−$n) | | β$^−$ = ?, β$^−$n = ? | | 85,963 01(75#) |
| $^{87}$Ga | > 634 ns | 14,494 (β$^−$), 12,105 (β$^−$n), 7,397 (β$^−$2n) | | β$^−$ = ?, β$^−$n = ?, β$^−$2n = ? | | 86,968 24(86#) |

## $_{32}$ Germanium

| Iso­top | Halbwerts­zeit | Zerfallsenergie (MeV) | Spin / Parität | Zerfallsart(en) (%) | NH (%) | Masse (u) |
| $^{58}$Ge | | 3,288 | 0 | 2p = 100? | | 57,991 72(43#) |
| $^{59}$Ge | > 360 ns | 1,658 | 3/2− | 2p = 100? | | 58,982 49(32#) |
| $^{60}$Ge | 30 ms | 12,175 (ε), 12,317 (εp) | 0+ | ε = ?, εp = ? | | 59,970 36(21#) |
| $^{61}$Ge | 44 ms | 13,405 (ε), 13,155 (εp) | 3/2− | ε = 20, εp = 80 | | 60,963 79(32#) |
| $^{62}$Ge | 129 ms | 10,088 (ε), 7,161 (εp) | 0+ | ε = 100?, εp = ? | | 61,955 02(15#) |
| $^{63}$Ge | 150 ms | 9,626 | 3/2− | ε | | 62,949 628(40) |
| $^{64}$Ge | 63,7 s | 4,517 | 0+ | ε | | 63,941 6899(40) |
| $^{65}$Ge | 30,9 s | 6,179 | 3/2− | ε | | 64,939 3681(23) |
| $^{66}$Ge | 2,26 h | 2,117 | 0+ | ε | | 65,933 8621(26) |
| $^{67}$Ge | 18,9 min | 4,221 | 1/2− | ε | | 66,932 7339(50) |
| $^{67m1}$Ge | 13,7 µs | 0,01917 | 5/2− | IT | | 66,932 754 48 |
| $^{67m2}$Ge | 110 ns | 0,75267 | 9/2+ | IT | | 66,933 541 92 |
| $^{68}$Ge | 270,95 d | 0,10694 | 0+ | ε | | 67,928 0953(20) |
| $^{69}$Ge | 39,05 h | 2,227 | 5/2− | ε | | 68,927 9645(14) |
| $^{69m1}$Ge | 5,1 µs | 0,08683 | 1/2− | IT | | 68,928 057 72 |
| $^{69m2}$Ge | 2,81 µs | 0,39793 | 9/2+ | IT | | 68,928 3917 |
| $^{70}$Ge | stabil | | 0+ | | 020,57 | 69,924 248 75(90) |
| $^{71}$Ge | 11,43 d | 0,233 | 1/2− | ε | | 70,924 952 33(90) |
| $^{71m1}$Ge | 20,41 ms | 0,19716 | 9/2+ | IT | | 70,925 163 99 |
| $^{72}$Ge | stabil | | 0+ | | 027,45 | 71,922 075 826(81) |
| $^{73}$Ge | stabil | | 9/2+ | | 007,75 | 72,923 458 956(61) |
| $^{73m1}$Ge | 0,499 s | 0,06673 | 1/2− | IT | | 72,923 530 59 |
| $^{73m2}$Ge | 2,9 µs | 0,01332 | 5/2+ | IT | | 72,923 473 26 |
| $^{74}$Ge | stabil | | 0+ | | 036,5 | 73,921 177 761(13) |
| $^{75}$Ge | 82,78 min | 1,177 | 1/2− | β$^−$ | | 74,922 858 370(55) |
| $^{75m1}$Ge | 47,7 s | 0,14026 (IT), 1,318 (β$^−$) | 7/2+ | IT = 99,97, β$^−$ = 0,03 | | 74,923 008 95 |
| $^{75m2}$Ge | 216 ns | 0,19257 | 5/2+ | IT | | 74,923 0651 |
| $^{76}$Ge | 1,6·10$^{21}$ a | 2,039 | 0+ | 2β | 007,73 | 75,921 402 726(19) |
| $^{77}$Ge | 11,3 h | 2,703 | 7/2+ | β$^−$ | | 76,923 549 843(57) |
| $^{77m1}$Ge | 52,9 s | 2,862 (β$^−$), 0,159 (IT) | 1/2− | β$^−$ = 81, IT = 19 | | 76,923 720 07 |
| $^{78}$Ge | 88 min | 0,95469 | 0+ | β$^−$ | | 77,922 8529(38) |
| $^{79}$Ge | 18,98 s | 4,109 | 1/2− | β$^−$ | | 78,925 360(40) |
| $^{79m1}$Ge | 39 s | 4,334 (β$^−$), 0,22412 (IT) | 7/2+ | β$^−$ = 96, IT = 4 | | 78,925 6006 |
| $^{80}$Ge | 29,5 s | 2,679 | 0+ | β$^−$ | | 79,925 3508(22) |
| $^{81}$Ge | 7,6 s | 6,242 | 9/2+ | β$^−$ | | 80,928 8329(22) |
| $^{81m1}$Ge | 7,6 s | 6,909 | 1/2+ | β$^−$ | | 80,929 549 52 |
| $^{82}$Ge | 4,56 s | 4,688 | 0+ | β$^−$ | | 81,929 7740(24) |
| $^{83}$Ge | 1,85 s | 8,693 | 5/2+ | β$^−$ | | 82,934 5391(26) |
| $^{84}$Ge | 954 ms | 7,705 (β$^−$), 3,45 (β$^−$n) | 0+ | β$^−$ = 89,8, β$^−$n = 10,2 | | 83,937 5751(34) |
| $^{85}$Ge | 0,56 s | 10,066 (β$^−$), 4,659 (β$^−$n) | 5/2+ | β$^−$ = 86, β$^−$n = 14 | | 84,942 9697(40) |
| $^{86}$Ge | 226 ms | 9,202 | 0+ | β$^−$ | | 85,946 58(32#) |
| $^{87}$Ge | 140 ms | 11,54 (β$^−$), 6,813 (β$^−$n) | 5/2+ | β$^−$ = 100?, β$^−$n = ? | | 86,952 68(43#) |
| $^{88}$Ge | > 300 ns | 10,582 | 0+ | β$^−$ | | 87,956 91(54#) |
| $^{89}$Ge | > 300 ns | 13,069 | | β$^−$ = 100? | | 88,963 79(64#) |
| $^{90}$Ge | > 635 ns | 12,109 (β$^−$), 9,506 (β$^−$n), 5,356 (β$^−$2n) | 0+ | β$^−$ = ?, β$^−$n = ?, β$^−$2n = ? | | 89,968 63(75#) |

## $_{33}$ Arsen

| Iso­top | Halbwerts­zeit | Zerfallsenergie (MeV) | Spin / Parität | Zerfallsart(en) (%) | NH (%) | Masse (u) |
| $^{60}$As | | 3,321 | | p = 100? | | 59,993 88(43#) |
| $^{61}$As | | 2,734 | | p = 100? | | 60,981 12(32#) |
| $^{62}$As | | 1,858 | | p = 100? | | 61,973 61(32#) |
| $^{63}$As | < 43 ns | 0,9827 | 3/2− | p | | 62,963 90(21#) |
| $^{64}$As | 18 ms | 14,662 | | ε | | 63,957 43(33#) |
| $^{65}$As | 128 ms | 9,541 | 3/2− | ε | | 64,949 611(91) |
| $^{66}$As | 95,77 ms | 9,582 | 0 | ε | | 65,944 1488(61) |
| $^{66m1}$As | 1,1 µs | 1,88 | 5+ | IT | | 65,946 166 48 |
| $^{66m2}$As | 8,2 µs | 3,547 | 9+ | IT | | 65,947 9563 |
| $^{67}$As | 42,5 s | 6,071 | 5/2− | ε | | 66,939 251 11(48) |
| $^{68}$As | 151,6 s | 8,084 | 3+ | ε | | 67,936 7741(20) |
| $^{68m1}$As | 111 s | 8,505 (ε), 0,42075 (IT) | 1+ | ε = ?, IT = ? | | 67,937 225 79 |
| $^{69}$As | 15,2 min | 3,988 | 5/2− | ε | | 68,932 246(34) |
| $^{70}$As | 52,6 min | 6,22 | 4+ | ε | | 69,930 926(54) |
| $^{70m1}$As | 96 µs | 0,03092 | 2+ | IT | | 69,930 959 19 |
| $^{71}$As | 65,3 h | 2,013 | 5/2− | ε | | 70,927 1138(45) |
| $^{72}$As | 26 h | 4,356 | 2− | ε | | 71,926 7523(44) |
| $^{73}$As | 80,3 d | 0,34479 | 3/2− | ε | | 72,923 8291(41) |
| $^{74}$As | 17,77 d | 2,562 (ε), 1,353 (β$^−$) | 2− | ε = 66, β$^−$ = 34 | | 73,923 9286(18) |
| $^{75}$As | stabil | | 3/2− | | 100 | 74,921 594 57(95) |
| $^{75m1}$As | 17,62 ms | 0,30609 | 9/2+ | IT | | 74,921 923 17 |
| $^{76}$As | 1,0942 d | 2,961 | 2− | β$^−$ | | 75,922 392 02(95) |
| $^{76m1}$As | 1,8 µs | 0,04627 | 1+ | IT | | 75,922 441 69 |
| $^{77}$As | 38,83 h | 0,6832 | 3/2− | β$^−$ | | 76,920 6476(18) |
| $^{77m1}$As | 114 µs | 0,47509 | 9/2+ | IT | | 76,921 157 63 |
| $^{78}$As | 90,7 min | 4,209 | 2− | β$^−$ | | 77,921 828(11) |
| $^{79}$As | 9,01 min | 2,281 | 3/2− | β$^−$ | | 78,920 9484(58) |
| $^{79m1}$As | 1,2 µs | 0,7724 | 9/2+ | IT | | 78,921 7776 |
| $^{80}$As | 15,2 s | 5,545 | 1+ | β$^−$ | | 79,922 4746(36) |
| $^{81}$As | 33,3 s | 3,856 | 3/2− | β$^−$ | | 80,922 1323(29) |
| $^{82}$As | 19,1 s | 7,491 | 1+ | β$^−$ | | 81,924 7412(46) |
| $^{82m1}$As | 13,6 s | 7,37 | 5− | β$^−$ | | 81,924 611 43 |
| $^{83}$As | 13,4 s | 5,671 | 3/2− | β$^−$ | | 82,925 2069(30) |
| $^{84}$As | 4,2 s | 10,094 (β$^−$), 1,416 (β$^−$n) | 3− | β$^−$ = 99,82, β$^−$n = 0,18 | | 83,929 3033(34) |
| $^{85}$As | 2,021 s | 9,225 (β$^−$), 4,687 (β$^−$n) | 3/2− | β$^−$ = 60,6, β$^−$n = 59,4 | | 84,932 1637(33) |
| $^{86}$As | 0,945 s | 11,541 (β$^−$), 5,38 (β$^−$n) | | β$^−$ = 74, β$^−$n = 26 | | 85,936 7015(37) |
| $^{87}$As | 0,56 s | 10,808 (β$^−$), 6,814 (β$^−$n) | 3/2− | β$^−$ = 84,6, β$^−$n = 15,4 | | 86,940 2917(32) |
| $^{88}$As | 0,2 s | 13,164 | | β$^−$ | | 87,945 55(21#) |
| $^{89}$As | > 300 ns | 12,194 | | β$^−$ = 100? | | 88,949 76(32#) |
| $^{90}$As | > 300 ns | 14,466 (β$^−$), 9,591 (β$^−$n) | | β$^−$ = ?, β$^−$n = ? | | 89,955 63(64#) |
| $^{91}$As | > 150 ns | 13,442 | | β$^−$ = 100? | | 90,960 39(64#) |
| $^{92}$As | | 15,742 | | β$^−$ | | 91,966 74(75#) |

## $_{34}$ Selen

| Iso­top | Halbwerts­zeit | Zerfallsenergie (MeV) | Spin / Parität | Zerfallsart(en) (%) | NH (%) | Masse (u) |
| $^{64}$Se | > 180 ns | 12,724 | 0+ | ε | | 63,971 09(54#) |
| $^{65}$Se | 33 ms | 13,776 | 3/2− | ε | | 64,964 40(64#) |
| $^{66}$Se | 42 ms | 10,657 | 0+ | ε = 100? | | 65,955 59(32#) |
| $^{67}$Se | 136 ms | 10,007 (ε), 7,738 (εp) | | ε = 99,5, εp = 0,5 | | 66,949 994(72) |
| $^{68}$Se | 35,5 s | 4,705 | 0+ | ε | | 67,941 825 24(53) |
| $^{69}$Se | 27,4 s | 6,678 (ε), 3,255 (εp) | 3/2− | ε = 99,95, εp = 0,05 | | 68,939 4148(16) |
| $^{69m1}$Se | 2 µs | 0,17265 | 5/2− | IT | | 68,939 600 15 |
| $^{69m2}$Se | 955 ns | 0,70715 | 9/2+ | IT | | 68,940 173 96 |
| $^{70}$Se | 41,1 min | 2,412 | 0+ | β$^+$ | | 69,933 5155(17) |
| $^{71}$Se | 4,74 min | 4,747 | 5/2− | ε | | 70,932 2094(30) |
| $^{71m1}$Se | 560 ns | 0,07904 | 1/2− | IT | | 90,932 294 25 |
| $^{71m2}$Se | 19 µs | 0,29074 | 9/2+ | IT | | 90,932 521 52 |
| $^{72}$Se | 8,4 d | 0,36161 | 0+ | ε | | 71,927 1405(21) |
| $^{73}$Se | 7,15 h | 2,725 | 9/2+ | ε | | 72,926 7549(80) |
| $^{73m1}$Se | 39,8 min | 2,761 (ε), 0,03608 (IT) | 3/2− | ε = 27,4, IT = 72,6 | | 72,926 793 63 |
| $^{74}$Se | stabil $^{2ε}$ | 1,209 | 0+ | 2ε | 000,89 | 73,922 475 934(15) |
| $^{75}$Se | 119,779 d | 0,86471 | 5/2+ | ε | | 74,922 522 870(78) |
| $^{76}$Se | stabil | | 0+ | | 009,37 | 75,919 213 704(17) |
| $^{77}$Se | stabil | | 1/2− | | 007,63 | 76,919 914 154(67) |
| $^{77m1}$Se | 17,4 s | 0,16238 | 7/2+ | IT | | 76,920 088 48 |
| $^{78}$Se | stabil | | 0+ | | 023,77 | 77,917 309 28(20) |
| $^{79}$Se | 2,95·10$^5$ a | 0,15061 | 7/2+ | β$^−$ | | 78,918 499 29(24) |
| $^{79m1}$Se | 3,92 min | 0,09622 (IT), 0,247 (β$^−$) | 1/2− | IT = 99,94, β$^−$ = 0,06 | | 78,918 602 59 |
| $^{80}$Se | stabil $^{2β}$ | | 0+ | | 049,61 | 79,916 5218(13) |
| $^{81}$Se | 18,45 min | 1,587 | 1/2− | β$^−$ | | 80,917 9930(14) |
| $^{81m1}$Se | 57,28 min | 0,10253 (IT), 1,689 (β$^−$) | 7/2+ | IT = 99,95, β$^−$ = 0,05 | | 80,918 103 07 |
| $^{82}$Se | 91·10$^{18}$ a | 2,996 | 0+ | 2β | 008,73 | 81,916 6995(15) |
| $^{82m1}$Se | 6,6 ns | 3,518 | 8+ | IT | | 81,920 476 68 |
| $^{83}$Se | 22,3 min | 3,673 | 9/2+ | β$^−$ | | 82,919 1186(36) |
| $^{83m1}$Se | 70,1 s | 3,901 | 1/2− | β$^−$ | | 82,919 363 73 |
| $^{84}$Se | 3,26 min | 1,836 | 0+ | β$^−$ | | 83,918 4668(21) |
| $^{85}$Se | 32,9 s | 6,162 | 5/2+ | β$^−$ | | 84,922 2608(28) |
| $^{86}$Se | 14,3 s | 5,129 | 0+ | β$^−$ | | 85,924 3117(27) |
| $^{87}$Se | 5,5 s | 7,466 (β$^−$), 1,135 (β$^−$n) | 5/2+ | β$^−$ = 99,8, β$^−$n = 0,2 | | 86,928 6886(24) |
| $^{88}$Se | 1,53 s | 6,832 (β$^−$), 1,936 (β$^−$n) | 0+ | β$^−$ = 99,33, β$^−$n = 0,67 | | 87,931 4175(36) |
| $^{89}$Se | 0,41 s | 9,282 (β$^−$), 3,652 (β$^−$n) | 5/2+ | β$^−$ = 92,2, β$^−$n = 7,8 | | 88,936 6691(40) |
| $^{90}$Se | 195 ms | 8,204 (β$^−$), 4,407 (β$^−$n) | 0+ | β$^−$ = ?, β$^−$n = ? | | 89,940 10(35) |
| $^{91}$Se | 0,27 s | 10,769 (β$^−$), 5,591 (β$^−$n) | | β$^−$ = 79, β$^−$n = 21 | | 90,945 96(54#) |
| $^{92}$Se | > 300 ns | 9,509 | 0+ | β$^−$ | | 91,949 84(64#) |
| $^{93}$Se | > 150 ns | 12,259 | 1/2+ | β$^−$ | | 92,956 29(86#) |
| $^{94}$Se | > 150 ns | 10,796 | 0+ | β$^−$ | | 93,960 49(86#) |
| $^{95}$Se | > 392 ns | 13,311 | | β$^−$ = 100? | | 94,967 30(86#) |

## $_{35}$ Brom

| Iso­top | Halbwerts­zeit | Zerfallsenergie (MeV) | Spin / Parität | Zerfallsart(en) (%) | NH (%) | Masse (u) |
| $^{67}$Br | | 1,15 | | p = 100? | | 66,964 65(54#) |
| $^{68}$Br | 1,2 µs | 0,84856 | | p = 100? | | 67,958 73(33#) |
| $^{69}$Br | 24 ns | 0,78872 | 5/2− | p = 100? | | 68,950 497(40) |
| $^{70}$Br | 79,1 ms | 10,504 | 0+ | ε | | 69,944 792(16) |
| $^{70m1}$Br | 2,2 s | 12,796 | 9+ | ε | | 69,947 2528 |
| $^{71}$Br | 21,4 s | 6,644 | 5/2− | ε | | 70,939 3422(58) |
| $^{72}$Br | 78,6 s | 8,801 | 3+ | ε | | 71,936 5886(72) |
| $^{72m1}$Br | 10,6 s | 0,15305 (IT), 8,954 (ε) | 1− | IT = 100, ε = ? | | 71,936 7529 |
| $^{73}$Br | 3,4 min | 4,58 | 1/2− | ε | | 72,931 6715(78) |
| $^{74}$Br | 25,4 min | 6,925 | 0 | ε | | 73,929 9102(63) |
| $^{74m1}$Br | 46 min | 9,921 | 4+ | ε | | 73,929 906 05 |
| $^{75}$Br | 96,7 min | 3,062 | 3/2− | ε | | 74,925 8105(46) |
| $^{76}$Br | 16,2 h | 4,963 | 1− | ε | | 75,924 542(10) |
| $^{76m1}$Br | 1,31 s | 0,10228 (IT), 5,066 (ε) | 4+ | IT = 99,4, ε = 0,6 | | 75,924 6518 |
| $^{77}$Br | 57,036 h | 1,365 | 3/2− | ε | | 76,921 3792(30) |
| $^{77m1}$Br | 4,28 min | 0,10661 | 9/2+ | IT | | 76,921 493 65 |
| $^{78}$Br | 6,45 min | 3,574 (ε), 0,72746 (β$^−$) | 1+ | ε = 99,99, β$^−$ = 0,01 | | 77,921 1459(38) |
| $^{79}$Br | stabil | | 3/2− | | 050,69 | 78,918 3376(14) |
| $^{79m1}$Br | 5,1 s | 0,20714 | 9/2+ | IT | | 78,918 559 97 |
| $^{80}$Br | 17,68 min | 1,87 (ε), 2,004 (β$^−$) | 1+ | ε = 91,7, β$^−$ = 8,3 | | 79,918 5298(14) |
| $^{80m1}$Br | 4,4205 h | 0,08541 | 5− | IT | | 79,918 621 49 |
| $^{81}$Br | stabil | | 3/2− | | 049,31 | 80,916 2897(14) |
| $^{81m1}$Br | 34,6 µs | 0,53704 | 9/2+ | IT | | 80,916 866 24 |
| $^{82}$Br | 35,282 h | 3,093 | 5− | β$^−$ | | 81,916 8032(14) |
| $^{82m1}$Br | 6,13 min | 0,04672 (IT), 3,14 (β$^−$) | 2− | IT = 97,6, β$^−$ = 2,4 | | 81,916 853 36 |
| $^{83}$Br | 2,4 h | 0,97662 | 3/2− | β$^−$ | | 82,915 1756(41) |
| $^{83m1}$Br | 700 ns | 3,073 | 19/2− | IT | | 82,918 474 95 |
| $^{84}$Br | 31,76 min | 4,656 | 2− | β$^−$ | | 83,916 496(28) |
| $^{84m1}$Br | 6 min | 4,96 | 6− | β$^−$ | | 83,916 822 55 |
| $^{84m2}$Br | 100 ns | 0,39237 | 1+ | IT | | 83,916 917 23 |
| $^{85}$Br | 2,9 min | 2,905 | 3/2− | β$^−$ | | 84,915 6458(33) |
| $^{86}$Br | 55,1 s | 7,633 | 2− | β$^−$ | | 85,918 8054(33) |
| $^{87}$Br | 55,65 s | 6,818 (β$^−$), 1,303 (β$^−$n) | 3/2− | β$^−$ = 97,4, β$^−$n = 2,6 | | 86,920 6740(34) |
| $^{88}$Br | 16,29 s | 8,975 (β$^−$), 1,922 (β$^−$n) | 1, 2− | β$^−$ = 93,42, β$^−$n = 6,58 | | 87,924 0833(34) |
| $^{88m1}$Br | 5,3 µs | 0,25406 | 5− | IT | | 87,924 356 04 |
| $^{89}$Br | 4,4 s | 8,262 (β$^−$), 3,346 (β$^−$n) | 3/2− | β$^−$ = 86,2, β$^−$n = 13,8 | | 88,926 7046(35) |
| $^{90}$Br | 1,91 s | 10,959 (β$^−$), 4,464 (β$^−$n) | 2− | β$^−$ = 74,8, β$^−$n = 25,2 | | 89,931 2928(36) |
| $^{91}$Br | 0,541 s | 9,867 (β$^−$), 5,781 (β$^−$n) | 5/2− | β$^−$ = 80, β$^−$n = 20 | | 90,934 3986(38) |
| $^{92}$Br | 0,343 s | 12,537 (β$^−$), 6,67 (β$^−$n) | 2− | β$^−$ = 66,9, β$^−$n = 33,1 | | 91,939 6316(72) |
| $^{93}$Br | 102 ms | 11,162 (β$^−$), 7,724 (β$^−$n) | 5/2− | β$^−$ = 32, β$^−$n = 68 | | 92,943 13(48) |
| $^{94}$Br | 70 ms | 13,749 (β$^−$), 8,465 (β$^−$n) | | β$^−$ = 32, β$^−$n = 68 | | 93,948 90(43#) |
| $^{95}$Br | > 150 ns | 12,388 (β$^−$), 9,506 (β$^−$n) | 3/2− | β$^−$ = 66, β$^−$n = 34 | | 94,953 01(21#) |
| $^{96}$Br | > 150 ns | 14,916 (β$^−$), 9,924 (β$^−$n) | | β$^−$ = 72,4, β$^−$n = 27,6 | | 95,959 03(32#) |
| $^{97}$Br | > 300 ns | 13,367 | 3/2− | β$^−$ = 100? | | 96,963 44(43#) |
| $^{98}$Br | > 634 ns | 15,863 (β$^−$), 10,903 (β$^−$n), 8,489 (β$^−$2n) | | β$^−$ = ?, β$^−$n = ?, β$^−$2n = ? | | 97,969 46(43#) |

## $_{36}$ Krypton

| Iso­top | Halbwerts­zeit | Zerfallsenergie (MeV) | Spin / Parität | Zerfallsart(en) (%) | NH (%) | Masse (u) |
| $^{69}$Kr | 32 ms | 13,677 | 5/2− | ε | | 68,965 18(43#) |
| $^{70}$Kr | 52 ms | 10,478 (ε), 8,197 (β$^+$p) | 0+ | ε = 98,7, β$^+$p = 1,3 | | 69,956 04(21#) |
| $^{71}$Kr | 100 ms | 10,179 (ε), 8,318 (εp) | 5/2− | ε = 97,9, εp = 2,1 | | 70,950 27(14) |
| $^{72}$Kr | 17,1 s | 5,127 (ε), 1,917 (εp) | 0+ | ε ≈ 100, εp = 1·10$^{−6}$ | | 71,942 0924(86) |
| $^{73}$Kr | 27,3 s | 7,096 (ε), 4,028 (εp) | 5/2− | ε = 99,75, εp = 0,25 | | 72,939 2892(71) |
| $^{73m1}$Kr | 107 s | 0,43435 | 9/2+ | IT | | 72,939 755 49 |
| $^{74}$Kr | 11,5 min | 2,956 | 0+ | ε | | 73,933 0840(22) |
| $^{75}$Kr | 4,29 min | 4,783 | 5/2+ | ε | | 74,930 9457(87) |
| $^{76}$Kr | 14,8 h | 1,275 | 0+ | ε | | 75,925 9103(43) |
| $^{77}$Kr | 74,4 min | 3,065 | 5/2+ | ε | | 76,924 6700(21) |
| $^{78}$Kr | > 1,5·10$^{21}$ a | 2,846 | 0+ | 2ε | 000,355 | 77,920 364 94(76) |
| $^{79}$Kr | 35,04 h | 1,628 | 1/2− | ε | | 78,920 0829(38) |
| $^{79m1}$Kr | 50 s | 0,1294 | 7/2+ | IT | | 78,920 221 82 |
| $^{80}$Kr | stabil | | 0+ | | 002,286 | 79,916 378 08(75) |
| $^{81}$Kr | 2,29·10$^5$ a | 0,28085 | 7/2+ | ε | | 80,916 5912(15) |
| $^{81m1}$Kr | 13,1 s | 0,1914 (IT), 0,47225 (ε) | 1/2− | IT ≈ 100, ε = 2,5·10$^{−3}$ | | 80,916 796 68 |
| $^{82}$Kr | stabil | | 0+ | | 011,593 | 81,913 482 73(94) |
| $^{83}$Kr | stabil | | 9/2+ | | 011,5 | 82,914 127 16(32) |
| $^{83m1}$Kr | 1,85 h | 0,04994 | 1/2− | IT | | 82,914 180 77 |
| $^{83m2}$Kr | 154,4 ns | 0,01774 | 7/2+ | IT | | 82,914 1462 |
| $^{84}$Kr | stabil | | 0+ | | 056,987 | 83,911 497 7282(44) |
| $^{84m1}$Kr | 1,9 µs | 0,33194 | 8+ | IT | | 83,911 854 08 |
| $^{85}$Kr | 10,752 a | 0,68704 | 9/2+ | β$^−$ | | 84,912 5273(21) |
| $^{85m1}$Kr | 4,48 h | 0,99203 (β$^−$), 0,305 (IT) | 1/2− | β$^−$ = 78,6, IT = 21,4 | | 84,912 854 73 |
| $^{85m2}$Kr | 1,7 µs | 1,992 | 19/2+ | IT | | 84,914 665 58 |
| $^{86}$Kr | stabil $^{2β}$ | | 0+ | | 017,279 | 85,910 610 6269(41) |
| $^{87}$Kr | 76,3 min | 3,889 | 5/2+ | β$^−$ | | 86,913 354 76(26) |
| $^{88}$Kr | 2,84 h | 2,918 | 0+ | β$^−$ | | 87,914 4479(28) |
| $^{89}$Kr | 3,15 min | 5,177 | 3/2+ | β$^−$ | | 88,917 8355(23) |
| $^{90}$Kr | 32,32 s | 4,405 | 0+ | β$^−$ | | 89,919 5279(20) |
| $^{91}$Kr | 8,57 s | 6,771 | 5/2+ | β$^−$ | | 90,923 8063(24) |
| $^{92}$Kr | 1,84 s | 6,003 (β$^−$), 0,90447 (β$^−$n) | 0+ | β$^−$ = 97,97, β$^−$n = 0,03 | | 91,926 1731(29) |
| $^{93}$Kr | 1,286 s | 8,484 (β$^−$), 2,565 (β$^−$n) | 1/2+ | β$^−$ = 98,05, β$^−$n = 1,95 | | 92,931 1472(27) |
| $^{94}$Kr | 212 ms | 7,215 (β$^−$), 3,2 (β$^−$n) | 0+ | β$^−$ = 98,89, β$^−$n = 1,11 | | 93,934 140(13) |
| $^{95}$Kr | 114 ms | 9,735 (β$^−$), 4,333 (β$^−$n) | 1/2 | β$^−$ = 97,13, β$^−$n = 2,87 | | 94,939 711(20) |
| $^{96}$Kr | 80 ms | 8,275 (β$^−$), 4,743 (β$^−$n) | 0+ | β$^−$ = 96,3, β$^−$n = 3,7 | | 95,943 017(22) |
| $^{97}$Kr | 63 ms | 11,097 (β$^−$), 5,861 (β$^−$n) | 3/2+ | β$^−$ = 93,3, β$^−$n = 6,7 | | 96,949 09(14) |
| $^{98}$Kr | 46 ms | 10,007 (β$^−$), 6,137 (β$^−$n) | 0+ | β$^−$ = 93, β$^−$n = 7 | | 97,952 43(32#) |
| $^{99}$Kr | 13 ms | 12,445 (β$^−$), 7,488 (β$^−$n) | 3/2+ | β$^−$ = 89, β$^−$n = 11 | | 98,958 39(54#) |
| $^{100}$Kr | 7 ms | 11,495 (β$^−$), 8,081 (β$^−$n) | 0+ | β$^−$ ≈ 100, β$^−$n = ? | | 99,962 37(43#) |
| $^{101}$Kr | > 635 ns | 13,684 (β$^−$), 9,348 (β$^−$n), 5,934 (β$^−$2n) | | β$^−$ = ?, β$^−$n = ?, β$^−$2n = ? | | 100,968 73(54#) |

## $_{37}$ Rubidium

| Iso­top | Halbwerts­zeit | Zerfallsenergie (MeV) | Spin / Parität | Zerfallsart(en) (%) | NH (%) |
| $^{74}$Rb | 64,9 ms | 10,4 | (0+) | εβ$^+$ | |
| $^{75}$Rb | 19,0 s | 7,02 | (3/2−, 5/2−) | εβ$^+$ | |
| $^{76}$Rb | 36,5 s | 8,50 | 1(−) | εβ$^+$ | |
| $^{77}$Rb | 3,77 min | 5,346 | 3/2− | εβ$^+$ | |
| $^{78}$Rb | 17,66 min | 7,224 | 0(+) | εβ$^+$ | |
| $^{78m1}$Rb | 5,74 min | 7,327 (εβ$^+$), 0,103 (IT) | 4(−) | εβ$^+$ = 90, IT = 10 | |
| $^{79}$Rb | 22,9 min | 3,649 | 5/2+ | εβ$^+$ | |
| $^{80}$Rb | 34 s | 5,723 | 1+ | εβ$^+$ | |
| $^{81}$Rb | 4,576 h | 2,237 | 3/2− | εβ$^+$ | |
| $^{81m1}$Rb | 30,5 min | 0,086 (IT), 2,237 (εβ$^+$) | 9/2+ | IT = 97,6, εβ$^+$ = 2,4 | |
| $^{82}$Rb | 1,273 min | 0,910 | 1+ | εβ$^+$ | |
| $^{82m1}$Rb | 6,472 h | 4,469 (εβ$^+$), 0,069 (IT) | 5− | εβ$^+$ ≈ 100, IT < 0,33 | |
| $^{83}$Rb | 86,2 d | 0,910 | 5/2− | ε | |
| $^{83m1}$Rb | 7,8 ms | | 9/2+ | IT = ?, εβ$^+$ = ? | |
| $^{84}$Rb | 32,77 d | 2,681 (εβ$^+$), 0,894 (β$^−$) | 2− | εβ$^+$ = 96,2, β$^−$ = 3,8 | |
| $^{84m1}$Rb | 20,26 min | 0,464 | 6− | IT | |
| $^{85}$Rb | stabil | | 5/2− | | 072,165 |
| $^{86}$Rb | 18,631 d | 1,774 (β$^−$), 0,519 (εβ$^+$) | 2− | β$^−$ ≈ 100, εβ$^+$ = 0,0052 | |
| $^{86m1}$Rb | 1,017 min | 0,556 | 6− | IT | |
| $^{87}$Rb | 4,81·10$^{10}$ a | 0,2833 | 3/2− | β$^−$ | 027,835 |
| $^{88}$Rb | 17,78 min | 5,316 | 2− | β$^−$ | |
| $^{89}$Rb | 15,15 min | 4,501 | 3/2− | β$^−$ | |
| $^{90}$Rb | 158 s | 6,590 | 0− | β$^−$ | |
| $^{90m1}$Rb | 258 s | 6,697 (β$^−$) 0,107 (IT) | 3− | β$^−$ = 97,4, IT = 2,6 | |
| $^{91}$Rb | 58,4 s | 5,861 | 3/2(−) | β$^−$ | |
| $^{92}$Rb | 4,492 s | 8,105 (β$^−$), 0,763 (β$^−$n) | 0− | β$^−$ ≈ 100, β$^−$n = 0,0107 | |
| $^{93}$Rb | 5,84 s | 7,462 (β$^−$), 2,178 (β$^−$n) | 5/2− | β$^−$ ≈ 100, β$^−$n = 1,39 | |
| $^{94}$Rb | 2,702 s | 10,307 (β$^−$), 3,560 (β$^−$n) | 3(−) | β$^−$ ≈ 100, β$^−$n = 10,4 | |
| $^{95}$Rb | 377,5 ms | 9,279 (β$^−$), 4,932 (β$^−$n) | 5/2− | β$^−$ ≈ 100, β$^−$n = 8,73 | |
| $^{96}$Rb | 0,199 s | 11,756 (β$^−$), 5,861 (β$^−$n) | 2+ | β$^−$ ≈ 100, β$^−$n = 13,8 | |
| $^{97}$Rb | 169,9 ms | 10,42 (β$^−$), 6,54 (β$^−$n) | 3/2(+) | β$^−$ ≈ 100, β$^−$n = 25,1 | |
| $^{98}$Rb | 114 ms | 12,344 (β$^−$), 6,46 (β$^−$n), 2,57 (β$^−$2n) | (1, 0) | β$^−$ ≈ 100, β$^−$n = 13,6, β$^−$2n = 0,051 | |
| $^{98m1}$Rb | 96 ms | 12,614 (β$^−$), 6,73 (β$^−$n) | (4, 5) | β$^−$ | |
| $^{99}$Rb | 50,3 ms | 11,25 (β$^−$), 7,61 (β$^−$n) | (5/2+) | β$^−$ ≈ 100, β$^−$n = 20,7 | |
| $^{100}$Rb | 51 ms | 13,50 (β$^−$), 7,40 (β$^−$n), ? (β$^−$2n) | | β$^−$ ≈ 100, β$^−$n = 6, β$^−$2n = 0,16 | |
| $^{101}$Rb | 32 ms | 11,81 (β$^−$), 8,55 (β$^−$n) | (3/2+) | β$^−$ ≈ 100, β$^−$n = 28 | |
| $^{102}$Rb | 37 ms | | | β$^−$ ≈ 100, β$^−$n = 18 | |

## $_{38}$ Strontium

| Iso­top | Halbwerts­zeit | Zerfallsenergie (MeV) | Spin / Parität | Zerfallsart(en) (%) | NH (%) |
| $^{75}$Sr | 71 ms | 10,6 (εβ$^+$), 8,3 (εp) | | εβ$^+$ ≈ 100, εp = 6,5 | |
| $^{76}$Sr | 8,9 s | 6,1 | 0+ | εβ$^+$ | |
| $^{77}$Sr | 9,0 s | 6,85 (εβ$^+$), 3,71 (εp) | 5/2+ | εβ$^+$ ≈ 100, εp < 0,25 | |
| $^{78}$Sr | 2,5 min | 3,762 | 0+ | εβ$^+$ | |
| $^{79}$Sr | 2,25 min | 5,318 | 3/2(−) | εβ$^+$ | |
| $^{80}$Sr | 106,3 min | 1,868 | 0+ | εβ$^+$ | |
| $^{81}$Sr | 22,3 min | 3,930 | 1/2− | εβ$^+$ | |
| $^{82}$Sr | 25,55 d | 0,180 | 0+ | ε | |
| $^{83}$Sr | 32,41 h | 2,276 | 7/2+ | εβ$^+$ | |
| $^{83m1}$Sr | 4,95 s | 0,259 | 1/2− | IT | |
| $^{84}$Sr | stabil $^{2ε}$ | | 0+ | | 000,56 |
| $^{85}$Sr | 64,84 d | 1,065 | 9/2+ | ε | |
| $^{85m1}$Sr | 67,63 min | 0,239 (IT), 1,304 (εβ$^+$) | 1/2− | IT = 86,6, εβ$^+$ = 13,4 | |
| $^{86}$Sr | stabil | | 0+ | | 009,86 |
| $^{86m1}$Sr | 0,45 µs | 2,956 | 8+ | IT | |
| $^{87}$Sr | stabil | | 9/2+ | | 007,00 |
| $^{87m1}$Sr | 2,803 h | 0,389 (IT), 0,106 (ε) | 1/2− | IT = 99,70, ε = 0,30 | |
| $^{88}$Sr | stabil | | 0+ | | 082,58 |
| $^{89}$Sr | 50,53 d | 1,495 | 5/2+ | β$^−$ | |
| $^{90}$Sr | 28,79 a | 0,546 | 0+ | β$^−$ | |
| $^{91}$Sr | 9,63 h | 2,699 | 5/2+ | β$^−$ | |
| $^{92}$Sr | 2,71 h | 1,911 | 0+ | β$^−$ | |
| $^{93}$Sr | 7,423 min | 4,137 | 5/2+ | β$^−$ | |
| $^{94}$Sr | 75,3 s | 3,511 | 0+ | β$^−$ | |
| $^{95}$Sr | 23,90 s | 6,080 | 1/2+ | β$^−$ | |
| $^{96}$Sr | 1,07 s | 5,371 | 0+ | β$^−$ | |
| $^{97}$Sr | 426 ms | 7,467 (β$^−$), 1,488 (β$^−$n) | 1/2+ | β$^−$ ≈ 100, β$^−$n = 0,005 | |
| $^{97m1}$Sr | 0,17 µs | 0,308 | 7/2+ | IT | |
| $^{97m2}$Sr | 0,255 µs | 0,831 | 11/2− | IT | |
| $^{98}$Sr | 0,653 s | 5,826 (β$^−$), 1,580 (β$^−$n) | 0+ | β$^−$ ≈ 100, β$^−$n = 0,18 | |
| $^{99}$Sr | 0,269 s | 8,03 (β$^−$), 2,19 (β$^−$n) | 3/2+ | β$^−$ ≈ 100, β$^−$n = 0,100 | |
| $^{100}$Sr | 202 ms | 7,08 (β$^−$), 1,91 (β$^−$n) | 0+ | β$^−$ ≈ 100, β$^−$n = 0,78 | |
| $^{101}$Sr | 118 ms | 8,82 (β$^−$), 3,76 (β$^−$n) | (5/2−) | β$^−$ ≈ 100, β$^−$n = 2,37 | |
| $^{102}$Sr | 69 ms | | 0+ | β$^−$ = 95,2, β$^−$n = 4,8 | |

## $_{39}$ Yttrium

| Iso­top | Halbwerts­zeit | Zerfallsenergie (MeV) | Spin / Parität | Zerfallsart(en) (%) | NH (%) |
| $^{77}$Y | 63 ms | 11,0 | | εβ$^+$ | |
| $^{79}$Y | 14,8 s | 7,1 (εβ$^+$), 1,3 (εp) | (5/2+) | εβ$^+$ ≈ 100, εp = ? | |
| $^{80}$Y | 35 s | 9,1 | (3,4,5) | εβ$^+$ | |
| $^{81}$Y | 70,4 s | 5,51 | (5/2+) | εβ$^+$ | |
| $^{82}$Y | 9,5 s | 7,82 | 1+ | εβ$^+$ | |
| $^{83}$Y | 7,08 min | 4,47 | (9/2+) | εβ$^+$ | |
| $^{83m1}$Y | 2,85 min | 4,532 (εβ$^+$), 0,062 (IT) | (3/2−) | εβ$^+$ = 60, IT = 40 | |
| $^{84}$Y | 4,6 s | 6,49 | 1+ | εβ$^+$ | |
| $^{84m1}$Y | 39,5 min | 6,49 | (5−) | εβ$^+$ | |
| $^{85}$Y | 2,68 h | 3,25 | (1/2)− | εβ$^+$ | |
| $^{85m1}$Y | 4,86 h | 3,27 (εβ$^+$), 0,02 (IT) | 9/2+ | εβ$^+$ ≈ 100, IT < 2·10$^{−3}$ | |
| $^{86}$Y | 14,74 h | 5,24 | 4− | εβ$^+$ | |
| $^{86m1}$Y | 48 min | 0,218 (IT), 5,458 (εβ$^+$) | (8+) | IT = 99,31, εβ$^+$ = 0,69 | |
| $^{87}$Y | 79,8 h | 1,862 | 1/2− | εβ$^+$ | |
| $^{87m1}$Y | 13,37 h | 0,381 (IT), 2,243 (εβ$^+$) | 9/2+ | IT = 98,43, εβ$^+$ = 1,57 | |
| $^{88}$Y | 106,65 d | 3,623 | 4− | εβ$^+$ | |
| $^{88m1}$Y | 13,9 ms | | (8)+ | IT | |
| $^{89}$Y | stabil | | 1/2− | | 100 |
| $^{89m1}$Y | 16,06 s | 0,909 | 9/2+ | IT | |
| $^{90}$Y | 64,00 h | 2,282 | 2− | β$^−$ | |
| $^{90m1}$Y | 3,19 h | 0,682 (IT), 2,964 (β$^−$) | 7+ | IT ≈ 100, β$^−$ = 0,0018 | |
| $^{91}$Y | 58,51 d | | 1/2− | β$^−$ | |
| $^{91m1}$Y | 49,71 min | | 9/2+ | IT = 100, β$^−$ < 1,5 | |
| $^{92}$Y | 3,54 h | 3,639 | 2− | β$^−$ | |
| $^{93}$Y | 10,18 h | 2,893 | 1/2− | β$^−$ | |
| $^{93m1}$Y | 0,82 s | 0,759 | 7/2+ | IT | |
| $^{94}$Y | 18,7 min | 4,919 | 2− | β$^−$ | |
| $^{95}$Y | 10,3 min | 4,420 | 1/2− | β$^−$ | |
| $^{96}$Y | 5,34 s | 7,087 | 0− | β$^−$ | |
| $^{96m1}$Y | 9,6 s | 7,087 | (8+) | β$^−$ | |
| $^{97}$Y | 3,75 s | 6,688 (β$^−$), 1,108 (β$^−$n) | (1/2−) | β$^−$ ≈ 100, β$^−$n = 0,055 | |
| $^{97m1}$Y | 1,17 s | 7,356 (β$^−$), 0,668 (IT), 1,776 (β$^−$n) | 9/2+ | β$^−$ > 99,3, IT < 0,7, β$^−$n < 0,08 | |
| $^{97m2}$Y | 142 ms | 3,523 (IT), 10,211 (β$^−$) | 27/2− | IT > 80, β$^−$ < 20 | |
| $^{98}$Y | 0,584 s | 8,830 (β$^−$), 2,443 (β$^−$n) | 0− | β$^−$ ≈ 100, β$^−$n = 0,33 | |
| $^{98m1}$Y | 2 s | 8,830 (β$^−$), 0,0 (IT), 2,443 (β$^−$n) | 4, 5 | β$^−$ = 90, IT < 20, β$^−$ = 3,4 | |
| $^{99}$Y | 1,470 s | 7,567 (β$^−$), 2,990 (β$^−$n) | 5/2+ | β$^−$ ≈ 100, β$^−$n = 1,9 | |
| $^{100}$Y | 0,735 s | 9,31 (β$^−$), 2,40 (β$^−$n) | 1−, 2− | β$^−$ ≈ 100, β$^−$n = 0,92 | |
| $^{100m1}$Y | 0,94 s | 9,31 (β$^−$) | 3, 4, 5 | β$^−$ | |
| $^{101}$Y | 0,45 s | 8,55 (β$^−$), 3,62 (β$^−$n) | 5/2+ | β$^−$ ≈ 100, β$^−$n = 1,94 | |
| $^{102}$Y | 0,36 s | 9,85 (β$^−$) | | β$^−$ | |
| $^{102m1}$Y | 0,3 s | 9,85 (β$^−$) | | β$^−$ | |
| $^{103}$Y | 0,23 s | 9,6 (β$^−$), 4,9 (β$^−$n) | 5/2+ | β$^−$ ≈ 100, β$^−$n = 8 | |
| $^{104}$Y | | 11,8 (β$^−$) | | β$^−$ | |

## $_{40}$ Zirconium

| Iso­top | Halbwerts­zeit | Zerfallsenergie (MeV) | Spin / Parität | Zerfallsart(en) (%) | NH (%) |
| $^{81}$Zr | 15 s | 7,2 (εβ$^+$), 4,2 (εp) | | εβ$^+$ ≈ 100, εp = ? | |
| $^{82}$Zr | 32 s | 4,0 | 0+ | εβ$^+$ | |
| $^{83}$Zr | 44 s | 5,87 (εβ$^+$), 2,26 (εp) | (1/2−) | εβ$^+$ ≈ 100, εp = ? | |
| $^{84}$Zr | 25,9 min | | 0+ | εβ$^+$ | |
| $^{85}$Zr | 7,86 min | 4,69 | 7/2+ | εβ$^+$ | |
| $^{85m1}$Zr | 10,9 s | 4,982 (εβ$^+$), 0,292 (IT) | (1/2−) | εβ$^+$ > 8, IT < 92 | |
| $^{86}$Zr | 16,5 h | 1,480 | 0+ | εβ$^+$ | |
| $^{87}$Zr | 1,68 h | 3,665 | (9/2)+ | εβ$^+$ | |
| $^{87m1}$Zr | 14,0 s | 0,336 | (1/2)− | IT | |
| $^{88}$Zr | 83,4 d | 0,670 | 0+ | ε | |
| $^{89}$Zr | 78,41 h | 2,832 | 9/2+ | εβ$^+$ | |
| $^{89m1}$Zr | 4,18 min | 3,420 (εβ$^+$), 0,588 (IT) | 1/2− | εβ$^+$ = 6,23, IT = 93,77 | |
| $^{90}$Zr | stabil | | 0+ | | 051,45 |
| $^{90m1}$Zr | 809,2 ms | 2,319 | 5− | IT | |
| $^{91}$Zr | stabil | | 5/2+ | | 011,22 |
| $^{92}$Zr | stabil | | 0+ | | 017,15 |
| $^{93}$Zr | 1,53·10$^6$ a | 0,091 | 5/2+ | β$^−$ | |
| $^{94}$Zr | stabil $^{2β}$ | | 0+ | | 017,38 |
| $^{95}$Zr | 64,02 d | 1,125 | 5/2+ | β$^−$ | |
| $^{96}$Zr | 3,8·10$^{19}$ a | 3,350 | 0+ | 2β$^−$ | 002,80 |
| $^{97}$Zr | 16,91 h | 2,658 | 1/2+ | β$^−$ | |
| $^{98}$Zr | 30,7 s | 2,261 | 0+ | β$^−$ | |
| $^{99}$Zr | 2,1 s | 4,558 | (1/2+) | β$^−$ | |
| $^{100}$Zr | 7,1 s | 3,34 | 0+ | β$^−$ | |
| $^{101}$Zr | 2,3 s | 5,49 | (3/2+) | β$^−$ | |
| $^{102}$Zr | 2,9 s | 4,61 | 0+ | β$^−$ | |
| $^{103}$Zr | 1,3 s | 6,95 | (5/2−) | β$^−$ | |
| $^{104}$Zr | 1,2 s | 5,9 | 0+ | β$^−$ | |
| $^{105}$Zr | 0,6 s | 8,5 | 0+ | β$^−$ | |

## Quellen

* ↑ Datenquelle
Siehe auch Liste der Isotope#Weblinks
bis 10 ∙ 11 bis 20 ∙ 21 bis 30 ∙ 31 bis 40 ∙ 41 bis 50 ∙ 51 bis 60 ∙ 61 bis 70 ∙ 71 bis 80 ∙ 81 bis 90 ∙ 91 bis 100 ∙ ab 101