Zufallsbild: Michal Jarmoluk / Pixabay

Liste der Isotope/7. Periode

Liste der Isotope/7. Periode

Erweiterte Suche

Dieser Artikel ist eine Liste der Isotope aller bekannten Elemente der siebten Periode.

Eine Übersicht über alle weiteren Isotope sowie eine Legende ist im Hauptartikel Liste der Isotope zu finden.

87 Francium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
200Fr 19 ms (3+) α = 100
200m1Fr 0,57 s (10−) α = 100
201Fr 48 ms 7,54 (α), 7,9 (K/β+) (9/2−) α < 100, K/β+ < 1
202Fr 0,34 s 7,389 (α), 9,4 (K/β+) (3+) α ≈ 97, K/β+ ≈ 3
202m1Fr 0,34 s 7,491 (α), 9,502 (K/β+) (10−) α ≈ 97, K/β+ ≈ 3
203Fr 0,55 s 7,28 (α), 7,2 (K/β+) (9/2−) α ≈ 95, K/β+ ≈ 5
204Fr 1,7 s 7,17 (α), 8,6 (K/β+) (3+) α ≈ 80, K/β+ ≈ 20
204m1Fr 2,6 s 7,211 (7+) α = ?
204m2Fr 1 s 7,486 (), 0,316 (IT) (10−) α < 100, IT < 1
205Fr 3,85 s 7,06 (α), 6,52 (K/β+) (9/2−) α > 99, K/β+ < 1
206Fr 15,9 s 6,926 (α), 7,75 (K/β+) (5+) α = 84, K/β+ = 16
206m1Fr 6,926 α <= 84
206m2Fr 0,7 s 7,576 (α), 0,65 (IT) (10−) α = 0,3, IT = ?
207Fr 14,8 s 6,9 (α), 5,71 (K/β+) 9/2− α = 95, K/β+ = 5
208Fr 59,1 s 6,77 (α), 6,99 (K/β+) 7+ α = 90, K/β+ = 10
209Fr 50,0 s 6,777 (α), 5,16 (K/β+) 9/2− α = 89, K/β+ = 11
210Fr 3,18 min 6,7 (α), 6,262 (K/β+) 6+ α = 60, K/β+ = 40
211Fr 3,10 min 6,66 (α), 4,605 (K/β+) 9/2− α > 80, K < 20
212Fr 20,0 min 5,117 (K/β+), 6,529 (α) 5+ K/β+ = 57, α = 43
213Fr 34,6 s 6,905 (α), 2,148 (K/β+) 9/2− α = 99,45, K/β+ = 0,55
214Fr 5,0 ms 8,589 (1−) α = 100
214m1Fr 3,35 ms 8,711 (8−) α = 100
215Fr 86 ns 9,540 9/2− α = 100
215m1Fr 3,5 ns (23/2)-
216Fr 0,70 µs 9,175 (α), 2,729 (K) (1−) α = 100, K < 2 × 10−7 sys
216m1Fr 71 ns 0,086 (23/2)- IT = 100
217Fr 22 µs 8,469 9/2− α = 100
218Fr 1,0 ms 8,014 1− α = 100
218m1Fr 22,0 ms 8,1 (α), 0,086 (IT) α < 100, IT = ?
219Fr 20 ms 7,449 9/2− α = 100
220Fr 27,4 s 6,801 (α), 1,209 (β−) 1+ α = 99,65, β− = 0,35
221Fr 4,9 min 6,458 (α), 2,033 (β−) 5/2− α = 100, ? = 8,8 × 10−11
222Fr 14,2 min 2,033 2− β− = 100
223Fr 21,8 min 1,149 (β−), 5,43 (α) 3/2(−) β− = 99,994, α = 0,006
224Fr 3,33 min 2,83 1− β− = 100
225Fr 4,0 min 1,866 3/2− β− = 100
226Fr 49 s 3,67 1− β− = 100
227Fr 2,47 min 2,49 1/2+ β− = 100
228Fr 38 s 4,34 2− β− = 100
229Fr 50 s β− = 100
230Fr 19,1 s β− = 100
231Fr 17,5 s β− = 100
232Fr 5 s β− = 100

88 Radium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
202Ra 0,7 ms 0+ α = 100
203Ra 1,0 ms (3/2−) α ≈ 100
203m1Ra 33 ms (13/2+) α ≈ 100
204Ra 59 ms 7,65 0+ α ≈ 100
205Ra 210 ms 7,51 (α), 7,0 (K/β+) (3/2−) α = ?, K/β+ = ?
205m1Ra 170 ms (13/2+) α = ?
206Ra 0,24 s 7,416 0+ α ≈ 100
207Ra 1,3 s 7,27 (α), 6,4 (K/β+) (5/2,3/2)- α ≈ 90, K/β+ ≈ 10
207m1Ra 55 ms 0,47 (IT), 7,74 (α), 6,87 (K/β+) (13/2+) IT = 85 sysα = 15 sys K/β+ ≈ 0,55
208Ra 1,3 s 7,273 (α), 4,33 (K/β+) 0+ α = 95 sys K/β+ = 5 sys
209Ra 4,6 s 5/2− α ≈ 90, K/β+ ≈ 10
210Ra 3,7 s 7,157 (α), 3,77 (K/β+) 0+ α ≈ 96, K/β+ ≈ 4
211Ra 13 s 7,046 (α), 5,0 (K) 5/2(−) α > 93, K < 7
212Ra 13,0 s 6,859 (α), 3,35 (K/β+) 0+ α ≈ 85, K/β+ ≈ 15
213Ra 2,74 min 6,859 (α), 3,88 (K/β+) 1/2− α = 80, K/β+ = 20
213m1Ra 2,1 ms 1,77 (IT), 8,628 (α) IT ≈ 99, α ≈ 1
214Ra 2,46 s 7,273 (α), 1,059 (K) 0+ α = 99,941, K = 0,059
215Ra 1,59 ms 8,864 (9/2+) α = 100
216Ra 182 ns 9,526 (α), 0,308 (K) 0+ α = 100, K < 1 × 10−8
216m1Ra <0,2 ns 1,507 (IT), 11,034 (α) 6+ α = 0,58
216m2Ra 1,24 ns 1,711 (IT), 11,237 (α) 8+ α = 1,86
216m3Ra 0,6 ns 2,026 (IT), 11,552 (α) 10+ α = 0,12
217Ra 1,6 µs 9,161 (9/2+) α = 100
218Ra 25,6 µs 8,546 0+ α = 100
219Ra 10 ms 8,130 (7/2)+ α = 100
220Ra 18 ms 7,595 0+ α = 100
221Ra 28 s 6,886 5/2+ α = 100, ? = 1,2 × 10−10
222Ra 38,0 s 6,681 0+ α = 100, 14C = 3,0 × 10−8
223Ra 11,435 d 5,979 3/2+ α = 100, 14C = 6,4 × 10−8
224Ra 3,66 d 5,789 0+ α = 100, 14C = 4,3 × 10−9
225Ra 14,9 d 0,357 1/2+ β− = 100
226Ra 1602 a 4,871 (α) 0+ α = 100, 14C = 3,2 × 10−9
227Ra 42,2 min 1,325 3/2+ β− = 100
228Ra 5,75 a 0,046 0+ β− = 100
229Ra 4,0 min 1,76 5/2(+) β− = 100
230Ra 93 min 0,99 0+ β− = 100
231Ra 103 s (7/2−,1/2+) β− = 100
232Ra 250 s 0+ β− = 100
233Ra 30 s β− = 100
234Ra 30 s 0+ β− = 100

89 Actinium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
206Ac 22 ms (3+) α = ?
206m1Ac 33 ms (10−)
207Ac 22 ms (9/2−) α ≈ 100
208Ac 95 ms (3+) α = ?
208m1Ac 25 ms (10−) α = ?
209Ac 0,10 s 7,73 (α), 7,11 (K/β+) (9/2−) α ≈ 99, K/β+ ≈ 1
210Ac 0,35 s 7,61 (α), 8,2 (K/β+) α ≈ 96, K/β+ ≈ 4
211Ac 0,25 s 7,62 α ≈ 100
212Ac 0,93 s 7,52 (α), 7,48 (K/β+) α ≈ 97, K/β+ ≈ 3
213Ac 0,80 s 7,5 α < 100
214Ac 8,2 s 7,35 (α), 6,34 (K) α > 89, K < 11
215Ac 0,17 s 7,75 (α), 3,49 (K/β+) 9/2− α = 99,91, K/β+ = 0,09
216Ac 0,33 ms 9,243 (1−) α = 100
216m1Ac 0,33 ms 0,037 (IT), 9,28 (α) (9−) α <= 2
217Ac 69 ns 9,832 (α), 2,819 (K/β+) 9/2− α = 100, K/β+ < 2
217m1Ac 740 ns (29/2)+
218Ac 1,08 µs 9,38 (1−) α = 100
219Ac 11,8 µs 8,83 (α) 9/2− α = 100, K/β+ ≈ 1 × 10−6
220Ac 26,4 ms 8,35 (α), 3,48 (K/β+) (3−) α = 100, K/β+ = 5 × 10−4
221Ac 52 ms 7,78 (3/2−) α = 100
222Ac 5,0 s 7,137 (α), 2,298 (K/β+) 1− α = 99, K/β+ = 1
222m1Ac 63 s 7,137 (α), 0 (IT), 2,298 (K/β+) α > 88, IT < 10, K/β+ < 0,7
223Ac 2,10 min 6,783 (α), 0,586 (K) (5/2−) α = 99, K = 1
224Ac 2,78 h 1,403 (K), 6,327 (α), 0,232 (β−) 0− K = 90,9 +14−20, α = 9,1 +20−14, β− < 1,6 sys
225Ac 10,0 d 5,935 (α) (3/2−) α = 100, 14C = 6,0 × 10−10
226Ac 29,37 h 1,117 (β−), 0,64 (K), 5,563 (α) (1) β− = 83, K = 17, α = 6 × 10−3
227Ac 21,773 a 0,045 (β−), 5,042 (α) 3/2− β− = 98,620, α = 1,380
228Ac 6,15 h 2,127 3+ β− = 100
229Ac 62,7 min 1,1 (3/2+) β− = 100
230Ac 122 s 2,7 (1+) β− = 100
231Ac 7,5 min 2,1 (1/2+) β− = 100
232Ac 119 s 3,7 (1+) β− = 100
233Ac 145 s (1/2+) β− = 100
234Ac 44 s β− = 100

90 Thorium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
210Th 9 ms 0+ α ≈ 100
211Th 37 ms α = ?, K = ?
212Th 30 ms 7,952 (α), 4,76 (K/β+) 0+ α = 100, K/β+ ≈ 0,3
213Th 140 ms 7,84 α < 100
214Th 100 ms 7,826 0+ α = 100
215Th 1,2 s 7,666 (1/2−) α = 100
216Th 0,028 s 8,071 (α), 2,17 (K/β+) 0+ α = 100, K/β+ ≈ 0,01 sys
216m1Th 180 µs 2,028 (IT), 10,099 (α) (8+,11−) IT ≈ 97, α ≈ 3
217Th 0,252 ms 9,424 (9/2+) α = 100
218Th 109 ns 9,849 0+ α = 100
219Th 1,05 µs 9,51 α = 100, K/β+ ≈ 1 × 10−7
220Th 9,7 µs 8,953 (α), 0,91 (K/β+) 0+ α = 100, K = 2 × 10−7 sys
221Th 1,68 ms 8,628 (7/2+) α = 100
222Th 2,8 ms 8,129 0+ α = 100
223Th 0,60 s 7,567 (5/2)+ α = 100
224Th 1,05 s 7,304 0+ α = 100
225Th 8,72 min 6,922 (α), 0,675 (K) (3/2)+ α ≈ 90, K ≈ 10
226Th 30,57 min 6,451 0+ α = 100
227Th 18,72 d 0,638 (γ), 6,051 (α) (1/2+) α = 100
228Th 1,9116 a 0,087 (γ), 5,520 (α) 0+ α = 100, 20O = 1,13 × 10−11
229Th 7340 a 5,168 5/2+ α = 100
230Th 7,538 × 104 a 0,2 (γ), 4,770 (α) 0+ α = 100, 24Ne = 5,6 × 10−11, SF < 3,8 × 10−12
231Th 25,52 h 0,085 (γ), 0,389 (β−), 4,213 (α) 5/2+ β− = 100, α ≈ 1 × 10−8
232Th 1,405 × 1010 a 4,083 (α), 0,055 (γ) 0+ α = 100, SF < 1,8 × 10−9 100
233Th 22,3 min 1,245 1/2+ β− = 100
234Th 24,10 d 0,09 (γ), 0,273 0+ β− = 100
235Th 7,1 min 1,93 (1/2+) β− = 100
236Th 37,5 min 0+ β− = 100
237Th 5,0 min β− = 100

91 Protactinium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
212Pa 5,1 ms (3+) α = ?
213Pa 5,3 ms α = ?
214Pa 17 ms α = ?
215Pa 14 ms 8,17 α = 100
216Pa 0,20 s 8,10 K ≈ 2 sys α ≈ 98 sys
217Pa 4,9 ms 8,49 α = 100
217m1Pa 1,6 ms 10,344 α < 100
218Pa 0,12 ms 9,79 α = 100
219Pa 53 ns 10,08 9/2− α = 100, K/β+ ≈ 5 × 10−9
220Pa 0,78 µs 9,83 (α), 5,72 (K/β+) α = 100, K/β+ = 3 × 10−7 sys
221Pa 5,9 µs 9,25 9/2− α = 100
222Pa 2,9 ms 8,85 α = 100
223Pa 6,5 ms 8,34 α = 100, K/β+ < 1,0 × 10−3
224Pa 0,79 s 7,694 α = 100
225Pa 1,7 s 7,39 α = 100
226Pa 1,8 min 6,987 (α), 2,834 (K/β+) α = 74, K/β+ = 26
227Pa 38,3 min 6,580 (α), 1,019 (K) (5/2−) α = 85, K = 15
228Pa 22 h 2,148 (K/β+), 6,265 (α) 3+ K/β+ = 98,0, α = 2,0
229Pa 1,50 d 0,316 (K), 5,841 (α) (5/2+) K = 99,52 , α = 0,48
230Pa 17,4 d 1,310 (K/β+), 0,563 (β-), 5,439 (α) (2−) K/β+ = 91,6, β− = 8,4, α = 0,0032
231Pa 32760 a 5,149 (α) 3/2− α = 100, SF < 1,6 × 10−11
232Pa 1,31 d 1,337 (β-), 0,495 (K) (2−) β− = 99,997, K = 0,003
233Pa 26,967 d 0,571 3/2− β− = 100
234Pa 6,70 h 2,197 4+ β− = 100, SF < 3 × 10−10
234m1Pa 1,17 min 2,271 (β-), 0,074 (K) (0−) β− = 99,84, IT = 0,16, SF < 1 × 10−9
235Pa 24,5 min 1,41 (3/2−) β− = 100
236Pa 9,1 min 2,9 1(−) β− = 100
237Pa 8,7 min 2,25 (1/2+) β− = 100
238Pa 2,3 min 3,46 (β-) (3−) β− = 100, SF < 2,6 × 10−6

92 Uran

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
218U 1,5 ms 8,79 0+ α = 100
219U 42 µs 9,9 α = ?
220U 0+
221U
222U 1,0 µs 9,5 0+ α = 100
223U 18 µs 8,94 α = ?
224U 0,9 ms 8,62 0+ α = 100
225U 95 ms 8,02 α = 100
226U 0,35 s 7,715 0+ α = 100
227U 1,1 min 7,211 (α) (3/2+) α = 100, K/β+ < 0,001
228U 9,1 min 6,804 (α), 0,307 (K) 0+ α > 95, K < 5
229U 58 min 1,309 (K/β+), 6,475 (α) (3/2+) K/β+ ≈ 80, α ≈ 20
230U 20,8 d 5,993 (α) 0+ α = 100, SF < 1,4 × 10−10
231U 4,2 d 0,36 (K), 5,55 (α) (5/2−) K = 100, α ≈ 0,0055
232U 68,9 a 5,414 (α) 0+ α = 100, 24Ne = 9 × 10−11
233U 1,592 × 105 a 4,909 (α) 5/2+ α = 100, SF < 6 × 10−11, 24Ne < 9,5 × 10−11
234U 2,455 × 105 a 4,859 (α) 0+ α = 100, SF = 1,64 × 10−9, Ne = 9 × 10−12, Mg = 1,4 × 10−11 0,0055
235U 7,038 × 108 a 4,679 (α) 7/2− α = 100, SF = 7,0 × 10−9, 20Ne = 8 × 10−10 0,7200
235m1U 25 min 0 1/2+ IT = 100
236U 2,342 × 107 a 4,572 (α) 0+ α = 100, SF = 9,4 × 10−8
237U 6,75 d 0,519 1/2+ β− = 100
238U 4,468 × 109 a 4,270 (α) 0+ α = 100, SF = 5,45 × 10−5, ββ = 2,2 × 10−10 99,2745
238m1U 225 ns 0+
238m2U 1 ns
239U 23,45 min 1,265 5/2+ β− = 100
240U 14,1 h 0,338 0+ β− = 100
241U
242U 16,8 min 0+ β− = 100

93 Neptunium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
225Np 6 ms α = ?
226Np 35 ms 8,2 α = 100
227Np 0,51 s 7,816 (α) α = 100, K/β+ ≈ 0,05
228Np 61,4 s 4,48 (K), 7,42 (α) K = 60, α = 40, KSF = 0,020
229Np 4,0 min 7,01 (α), 2,56 (K) α > 50, K < 50
230Np 4,6 min 3,61 (K/β+), 6,78 (α) K/β+ < 97, α > 3
231Np 48,8 min 1,84 (K), 6,37 (α) (5/2) K = 98, α = 2
232Np 14,7 min 2,70 (4+) K/β+ = 100
233Np 36,2 min 1,23 (K), 5,83 (α) (5/2+) K = 100, α < 0,001
234Np 4,4 d 1,81 (0+) K/β+ = 100
235Np 396,1 d 0,124 (K), 5,192 (α) 5/2+ K = 99,99740, α = 0,00260
236Np 1,54 × 105 a 0,94 (K), 0,49 (β−), 5,02 (α) (6−) K = 87,3, β− = 12,5, α = 0,16
236m1Np 22,5 h 1,00 (K), 0,55 (β−) 1 K = 52, β− = 48
237Np 2,144 × 106 a 4,959 (α) 5/2+ α = 100, SF < 2 × 10−10
237m1Np 45 ns α = 100, SF <= 100
238Np 2,117 d 1,292 2+ β− = 100
238m1Np 112 ns
239Np 2,3565 d 0,722 5/2+ β− = 100
240Np 61,9 min 2,20 (5+) β− = 100
240m1Np 7,22 min 2,20 (β−), 0 (IT) 1(+) β− = 99,89, IT = 0,11
241Np 13,9 min 1,31 (5/2+) β− = 100
242Np 5,5 min 2,70 (6) β− = 100
242m1Np 2,2 min 2,70 (1+) β− = 100
243Np 1,8 min 2,17 (5/2−) β− = 100
244Np 2,29 min (7−) β− = 100

94 Plutonium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
228Pu 4 ms 7,95 0+ α = 100
229Pu 90 s α = 100
230Pu 1,7 min 7,175 (α) 0+ α <= 100, K/β+ >= 0
231Pu 8,6 min K/β+ = ?, α = ?
232Pu 34,1 min 1,06 (K/β+), 6,716 (α) 0+ K = 77, α = 23
233Pu 20,9 min 1,90 (K/β+), 6,42 (α) K/β+ = 99,88, α = 0,12
234Pu 8,8 h 0,388 (K/β+), 6,31 (α) 0+ K ≈ 94, α ≈ 6
234m1Pu 3 ns
235Pu 25,3 min 1,17 (K/β+), 6,00 (α) (5/2+) K/β+ = 99,9973, α = 0,0027
235m1Pu 25 ns
236Pu 2,858 a 5,867 (α) 0+ α = 100, SF = 1,37 × 10−7
236m1Pu 37 × 10−12 s (0+)
236m2Pu 34 ns
237Pu 45,2 d 0,22 (K), 5,75 (α) 7/2− K = 99,9958, α = 0,0042
237m1Pu 0,18 s 0,146 (IT) 1/2+ IT = 100
237m2Pu 85 ns SF <= 100
237m3Pu 1,1 µs SF <= 100
238Pu 87,74 a 5,593 (α) 0+ α = 100, SF = 1,85 × 10−7, Mg ≈ 6 × 10−15, Si ≈ 1,4 × 10−14
238m1Pu 0,6 ns SF <= 100
238m2Pu 6,0 ns (0+) SF <= 100
239Pu 24110 a 5,245 (α) 1/2+ α = 100, SF = 3,0 × 10−10
239m1Pu 7,5 µs (5/2+)
239m2Pu 2,6 ns (9/2−)
240Pu 6563 a 5,256 (α) 0+ α = 100, SF = 5,75 × 10−6
240m1Pu 3,7 ns 0+ SF > 0
241Pu 14,35 a 0,021 (β−), 5,140 (α) 5/2+ β− = 99,9975, α = 0,0025, SF ≈ 2,4 × 10−14
241m1Pu 21 µs SF > 0
241m2Pu 32 ns
242Pu 3,733 × 105 a 4,984 (α) 0+ α = 100, SF = 5,54 × 10−4
243Pu 4,956 h 0,528 7/2+ β− = 100
243m1Pu 45 ns
244Pu 8,00 × 107 a 4,666 (α) 0+ α = 99,879, SF = 0,121, ββ<3 × 10−11 100
244m1Pu 400 ps 0+ SF <= 100
245Pu 10,5 h 1,205 (9/2−) β− = 100
245m1Pu 90 ns
246Pu 10,84 d 0,401 0+ β− = 100
247Pu 2,27 d β− = 100

95 Americium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
232Am 79 s ? (K), 7,2 (α) K ≈ 98, α ≈ 2, KSF = 0,069
233Am 4,17 (K/β+), 6,87 (α) K/β+ = 99,96, α = 0,04
234Am 2,32 min K = 99,961, α = 0,039, KSF = 0,0066
235Am 15 min K/β+ = ?, α = ?
236Am 3,28 (K), 6,45 (α) K = ?, α = ?
237Am 73,0 min 1,73 (K), 6,25 (α) 5/2(−) K = 99,975, α = 0,025
237m1Am 5 ns SF <= 100
238Am 98 min 2,26 (K/β+), 6,04 (α) 1+ K/β+ > 99,99, α = 1,0 × 10−4
238m1Am 35 µs
239Am 11,9 h 0,803 (K), 5,924 (α) (5/2)- K = 99,990, α = 0,010
239m1Am 163 ns (7/2+)
240Am 50,8 h 1,379 (K), 5,710 (α) (3−) K = 100, α = 1,9 × 10−4
240m1Am 0,924 ms SF <= 100
241Am 432,2 a 5,638 (α) 5/2− α = 100, SF = 4,3 × 10−10
241m1Am 1,2 µs
242Am 16,02 h 0,665 (β−), 0,751 (K) 1− β− = 82,7, K = 17,3
242m1Am 141 a 0,049 (β−), 5,637 (α) 5− IT = 99,541, α = 0,459, SF < 4,7 × 10−9
242m2Am 14,0 ms 2,20 (β−), 7,788 (α) SF = ?, IT = ?
243Am 7370 a 5,438 (α) 5/2− α = 100, SF = 3,7 × 10−9
243m1Am 5,5 µs
244Am 10,1 h 1,428 (β−) (6−) β− = 100
244m1Am 6,5 µs SF <= 100
244m2Am 26 min 1,516 (β−), 0,164 (K) 1+ β− = 99,9639, K = 0,0361
245Am 2,05 h 0,894 (5/2)+ β− = 100
245m1Am 0,64 µs
246Am 39 min 2,376 (7−) β− = 100
246m1Am 25,0 min 2,376 (β−), 0 (IT) 2(−) β− = 100, IT < 0,01
246m2Am 73 µs
247Am 23,0 min 1,7 (5/2) β− = 100
248Am 3,1 (5/2) β− = 100

96 Curium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
233Cm 1 min 3/2+
234Cm 51 s 0+ β+ = 47#; SF = 3
235Cm 5 min 5/2+
235pCm
236Cm 10 min 1,71 (K/β+), 7,1 (α) 0+ K/β+ = ?, α = ?
237Cm 20 min 5/2+ α = ?
237pCm 7/2−
238Cm 2,4 h 0,97 (K), 6,62 (α) 0+ K = 96,16, α = 3,84
239Cm 2,9 h 1,7 (K), 6,46 (α) (7/2−) K = 100, α < 0,1
240Cm 27 d 6,397 (α), 0,215 (K) 0+ α > 99,5, K < 0,5, SF = 3,9 × 10−6
240m1Cm 10 ps SF <= 100
240m1Cm 55 ns SF ≈ 100
241Cm 32,8 d 0,767 (K), 6,185 (α) 1/2+ K = 99,0, α = 1,0
241m1Cm 15,3 ns
242Cm 162,8 d 6,216 (α) 0+ α = 100, SF = 6,37 × 10−6
242m1Cm 40 × 10−12 s
242m2Cm 0,18 µs 2,80 (IT) IT = ?, SF = ?
243Cm 29,1 a 6,196 (α), 0,009 (K) 5/2+ α = 99,71, K = 0,29 , SF = 5,3 × 10−9
243m1Cm 42 ns
244Cm 18,10 a 5,902 (α) 0+ α = 100, SF = 1,371 × 10−4
244m1Cm 34 ms 1,04 (IT) 6+ IT = 100, SF < 7,7 × 10−10
245Cm 8500 a 5,623 (α) 7/2+ α = 100, SF = 6,1 × 10−7
245m1Cm 13,2 ns
246Cm 4730 a 5,475 (α) 0+ α = 99,9737, SF = 0,0263
247Cm 1,56 × 107 a 5,353 9/2− α = 100
248Cm 3,40 × 105 a 5,162 (α) 0+ α = 91,61, SF = 8,39
249Cm 64,15 min 1/2(+) β− = 100
250Cm 9000 a 5,169 (α), 0,90 (β−) 0+ SF ≈ 86, α ≈ 8, β− ≈ 6
251Cm 16,8 min 1,42 (1/2+) β− = 100
252Cm 2 d 0+ β− = 100

97 Berkelium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
238Bk 144 s 5,0 (K/β+) K/β+ = 100, KSF = 0,048
239Bk (7/2+)
240Bk 4,8 min 3,94 (K/β+) K/β+ = 100, KSF = 1 × 10−3 sys
241Bk (7/2+)
242Bk 7,0 min 3,0 (K/β+) K/β+ < 100, SF > 0
242m1Bk 9,5 ns
242m2Bk 0,60 µs
243Bk 4,5 h 1,508 (K), 6,874 (α) (3/2−) K ≈ 99,85, α ≈ 0,15
243m1Bk 5 ns
244Bk 4,35 h 2,26 (K), 6,78 (α) (1−) K = 99,994, α = 0,006
244m1Bk 820 ns SF <= 100
245Bk 4,94 d 0,81 (K), 6,455 (α) 3/2− K = 99,88, α = 0,12
245m1Bk 2 ns
246Bk 1,80 d 1,35 (K), 6,07 (α) 2(−) K = 100, α < 0,2 sys
247Bk 1380 a 5,889 (3/2−) α < 100
248Bk 9 a 5,803 (6+) α > 70
248m1Bk 23,7 h 0,87 (β−), 0,717 (K), 5,803 (α) 1(−) β− = 70, K = 30, α < 0,001
249Bk 320 d 0,125 (β−), 5,526 (α) 7/2+ β− = 99,99855, α = 0,00145, SF = 4,76 × 10−8
250Bk 3,217 h 1,78 2− β− = 100
251Bk 55,6 min 1,093 (β−), 5,57 (α) (3/2−) β− = 100, α ≈ 1 × 10−5

98 Californium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
237Cf 2,1 s SF ≈ 10 sys
238Cf 21 ms 0+ SF ≈ 100 sys
239Cf 39 s 7,81 (α), 3,9 (K) α > 50, K < 50
240Cf 1,06 min 7,719 (α) 0+ α = 87, SF ≈ 13
241Cf 3,78 min 3,3 (K), 7,66 (α) K ≈ 75, α ≈ 25
242Cf 3,49 min 7,516 (α) 0+ α = 65, SF < 1,4 × 10−2
243Cf 10,7 min 2,22 (K), 7,39 (α) (1/2+) K ≈ 86, α ≈ 14
244Cf 19,4 min 7,329 0+ α = 70
245Cf 45,0 min 1,569 (K), 7,256 (α) (5/2+) K = 64, α = 36
246Cf 35,7 h 6,862 (α), 0,12 (K) 0+ α = 99,9996, SF = 2,3 × 10−4, K < 5 × 10−4
246m1Cf 45 ns
247Cf 3,11 h 0,646 (K), 6,527 (α) (7/2+) K = 99,965, α = 0,035
248Cf 333,5 d 6,361 (α) 0+ α = 99,9971, SF = 0,0029
249Cf 351 a 6,295 (α) 9/2− α = 100, SF = 4,4 × 10−7
250Cf 13,08 a 6,176 (α) 0+ α = 99,923, SF = 0,077
251Cf 898 a 6,176 (α) 1/2+ α = 100
252Cf 2,645 a 6,217 (α) 0+ α = 96,908, SF = 3,092
253Cf 17,81 d 0,285 (β−), 6,124 (α) (7/2+) β− = 99,69, α = 0,31
254Cf 60,5 d 5,926 (α) 0+ SF = 99,69, α = 0,31
255Cf 85 min 0,7 (9/2+) β− = 100
256Cf 12,3 min 5,6 (α) 0+ SF = 100, β− < 1 sys α ≈ 1 × 10−6 sys

99 Einsteinium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
241Es 9 s α = 100
242Es 40 s 5,6 (K) α ≈ 100, KSF = 1,4
243Es 21 s 4,0 (K), 8,072 (α) K < 70, α > 30
244Es 37 s 4,56 (K), 7,95 (α) K = 96, α = 4, KSF = 0,01 sys
245Es 1,1 min 3,05 (K), 7,909 (α) (3/2−) K = 60, α = 40
246Es 7,7 min 3,88 (K), 7,74 (α) (4−,6+) K = 90,1, α = 9,9, KSF = 0,003 sys
247Es 4,55 min 2,48 (K), 7,49 (α) (7/2+) K ≈ 93, α ≈ 7
248Es 27 min (2−,0+) K > 99, α ≈ 0,25, KSF = 3 × 10−5 sys
249Es 102,2 min 1,45 (K), 6,94 (α) 7/2(+) K = 99,43, α = 0,57
250Es 8,6 h 2,10 (K), 6,88 (α) (6+) K > 97, α < 3 sys
250m1Es 2,22 h 2,10 (K), 6,88 (α) 1(−) K > 99, α < 1 sys
251Es 33 h 0,376 (K), 6,597 (α) (3/2−) K = 99,51, α = 0,49
252Es 471,7 d 6,76 (α), 1,26 (K), 0,48 (β−) (5−) α = 76, K = 24, β− ≈ 0,01
253Es 20,47 d 6,739 (α) 7/2+ α = 100, SF = 8,9 × 10−6
254Es 275,7 d 6,628 (α), 0,654 (K), 1,09 (β−) (7+) α = 100, K < 1 × 10−4, β− = 1,74 × 10−6, SF < 3 × 10−6
254m1Es 39,3 h 1,168 (β−), 0,078 (IT), 6,696 (α), 0,732 (K) 2+ β− = 98, α = 0,33, IT < 3, K = 0,078, SF < 0,045
255Es 39,8 d 0,288 (β−), 6,436 (α) (7/2+) β− = 92,0, α = 8,0, SF = 0,0045
256Es 25,4 min 1,67 (1+) β− = 100
256m1Es 7,6 h 1,67 (β−) (8+) β− ≈ 100, SF = 0,002
257Es 7,8 d sf, β−?

100 Fermium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
242Fm 0,8 ms 0+ SF = 100
243Fm 0,18 s 8,69 (α) α < 100, SF < 0,5, K = ?
244Fm 3,3 ms 0+ SF = 100
245Fm 4,2 s 8,44 (α) α = 100, SF < 0,11
246Fm 1,1 s 8,374 (α), 2,16 (K) 0+ α = 92, SF = 7,3, K < 1 sys
247Fm 35 s 8,19 (α) α > 50, K/β+ < 50
247m1Fm 9,2 s α < 100
248Fm 36 s 8,002 (α), 1,6 (K) 0+ α = 93, K ≈ 7, SF = 0,10
249Fm 2,6 min 2,44 (K), 7,81 (α) (7/2+) K ≈ 85 sys α ≈ 15 sys
250Fm 30 min 7,557 (α), 0,8 (K) 0+ α > 90, K < 10, SF = 0,0069
250m1Fm 1,8 s 1,0 (IT) IT > 80, SF < 8 × 10−5
251Fm 5,30 h 1,474 (K), 7,425 (α) (9/2−) K = 98,20, α = 1,80
252Fm 25,39 h 7,153 (α) 0+ α = 99,9977, SF = 0,00232
253Fm 3,00 d 0,333 (K), 7,197 (α) 1/2+ K = 88, α = 12
254Fm 3,240 h 7,307 (α) 0+ α = 99,9408, SF = 0,0592
255Fm 20,07 h 7,241 (α) 7/2+ α = 100, SF = 2,3 × 10−5
256Fm 157,6 min 7,027 (α) 0+ SF = 91,9, α = 8,1
256m1Fm 70 ns IT > 80, SF = ?
257Fm 100,5 d 6,864 (α) (9/2+) α = 99,790, SF = 0,210
258Fm 370 µs 0+ SF = 100
259Fm 1,5 s SF = 100
260Fm 4 ms SF = 100

101 Mendelevium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
245Md 0,35 s (7/2) α = 100
245m1Md 0,90 ms (1/2−)
246Md 1,0 s α = 100
247Md 1,12 s 8,82 (α) α = 80, SF = 20
248Md 7 s 5,25 (K), 8,7 (α) K = 80, α = 20, SF < 0,05
249Md 24 s 3,7 (K), 8,46 (α) K = 80, α = 20
250Md 52 s 4,6 (K), 8,31 (α) K = 93, α = 7, KSF = 0,02 sys
251Md 4,0 min 3,07 (K), 8,02 (α) K > 90, α < 10
252Md 2,3 min 3,89 (K) K > 50, α < 50
253Md 6 min 1,96 K β+ = 100
254Md 10 min 2,68 K < 100
254m1Md 28 min K < 100
255Md 27 min 1,043 (K), 7,907 (α) (7/2−) K = 92, α = 8, SF < 1,4
256Md 78,1 min 2,13 (K), 7,897 (α) (0−, 1−) K = 90,7, α = 9,3, SF < 2,8
257Md 5,52 h 0,406 (K), 7,271 (α) (7/2−) K = 85, α = 15, SF < 1
258Md 51,5 d 7,271 (α), 1,23 (K) (8−) α = 100, SF < 0,003, β− < 0,003, K < 0,003
258m1Md 57,0 min 1,23 (K), 7,271 (α) (1−) K > 70, SF < 30, α < 1,2, β− < 30
259Md 96 min 7,1 (α) (7/2−) SF ≈ 100, α < 1,3
260Md 27,8 d 7,0 (α), 1,0 (β−) SF > 73, α < 25, β− < 10

102 Nobelium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
250No 0,25 ms 9,0 (α) 0+ SF = 100, α ≈ 0,05 sys
251No 0,8 s 8,89 (α), 3,78 (K) α ≈ 100, K ≈ 1 sys, SF < 8
252No 2,30 s 8,549 (α) 0+ α = 73,1, SF = 26,9
253No 1,7 min 8,44 (α), 3,2 (K) (9/2−) α ≈ 80, K ≈ 20 sys
254No 55 s 8,226 (α), 1,14 (K) 0+ α = 90, K = 10, SF = 0,17
254m1No 0,28 s 0,50 (IT) IT > 80
255No 3,1 min 8,445 (α), 2,012 (K) (1/2+) α = 61,4, K = 38,6
256No 2,91 s 8,581 (α) 0+ α = 99,5, SF = 0,53 $ \left.^{+8}_{-4}\right. $
257No 25 s 8,45 (α) (7/2+) α ≈ 100
258No 1,2 ms 8,2 (α) 0+ SF = 100, α ≈ 1 × 10−3 sys
259No 58 min 7,91 (α), 0,5 (K) (9/2+) α = 75, K = 25, SF < 10
260No 106 ms 0+ SF = 100
261No
262No 5 ms 0+ SF = ?

103 Lawrencium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
252Lr 0,4 s 9,15 α ≈ 100
253Lr 0,6 s 8,99 (α) α > 80, SF < 20
253m1Lr 1,5 s 8,99 (α), 4,3 (K) α = 98, K ≈ 1 sys, SF < 1
254Lr 13 s 8,75 (α), 5,2 (K) α = 78, K = 22, SF < 0,16
255Lr 22 s 8,62 (α), 3,24 (K) α = 85, K < 30, SF < 0,10
256Lr 28 s 8,88 (α), 4,19 (K) α > 80, K < 20, SF < 0,026
257Lr 0,646 s 9,01 (α) (9/2+) α = 100, SF < 6,5 × 10−4
258Lr 3,9 s 8,90 (α), 3,38 (K) α > 95, K < 5, SF < 5
259Lr 6,3 s 8,67 (α), 1,81 (K) α = 77, SF = 23, K < 0,5
260Lr 180 s 8,31 (α), 2,74 (K) α = 75, K = 25
261Lr 39 min SF < 100
262Lr 216 min 2,1 (K) K > 10, SF < 10

104 Rutherfordium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
253Rf 1,8 s 9,5 (α) SF ≈ 50, α ≈ 50
253m1Rf 48 µs SF ≈ 100
254Rf 0,5 ms 9,3 (α) 0+ SF = 100, α ≈ 0,3 sys
254m1Rf 22,3 µs SF ≈ 100
255Rf 1,5 s 9,3 (α) (9/2−) SF = 52, α = 48
256Rf 6,7 ms 8,952 (α) 0+ SF = 98 $ \left.^{+2}_{-7}\right. $, α = 2,2 $ \left.^{+73}_{-18}\right. $
257Rf 4,7 s 9,25 (α), 3,4 (K) (7/2+) α = 79,6, K = 18, SF = 2,4
258Rf 12 ms 9,25 (α) 0+ SF ≈ 87, α ≈ 13
259Rf 3,1 s 9,11 (α) α = 93, SF = 7, K ≈ 0,3
260Rf 20,1 ms 9,00 (α), 2,45 (K) 0+ SF = 100
261Rf 4,2 s 8,81 (α), 1,8 (K) α > 80, SF < 10, K < 10 sys
261m1Rf 78 s α ≈ 100
262Rf 2,1 s 0+ SF = 100
262m1Rf 47 ms [2+]
263Rf 15 min SF = 100
267Rf 1,3 h SF = 100
268Rf 0+ SF = 100

105 Dubnium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
255Db 1,6 s 9,6 (α) α > 47, SF < 53
256Db 2,6 s 9,5 (α) SF < 40, α ≈ 70, K ≈ 10 sys
257Db 1,3 s 9,31 (α), 4,3 (K) α = 82, SF = 17, K = 1 sys
257m1Db 0,8 s α ≈ 100
258Db 4,4 s 9,55 (α), 5,5 (K) α = 67 $ \left.^{+5}_{-6}\right. $, K = 33 $ \left.^{+9}_{-5}\right. $, SF < 34
258m1Db 20 s K ≈ 100
259Db 0,51 s α ≈ 100
260Db 1,52 s 9,37 (α), 4,6 (K) α > 90,4, SF ≈ 9,6, K < 2,5
261Db 1,8 s 9,27 (α) α > 50, SF < 50
262Db 34 s 9,21 (α), 4,0 (K) α ≈ 64, SF ≈ 33, K ≈ 3 sys
263Db 27 s 9,03 (α) SF = 57, α = 43
267Db 1,2 h SF ≈ 100
268Db 16 h SF ≈ 100

106 Seaborgium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
258Sg 2,9 ms 0+ SF = 100
259Sg 0,48 s 9,87 (α) (1/2+) α = 90, SF < 20
260Sg 3,6 ms 9,92 (α) 0+ α = 50 $ \left.^{+30}_{-20}\right. $, SF = 50 $ \left.^{+20}_{-30}\right. $
261Sg 0,23 s 9,81 (α) α = 95, SF < 10
262Sg 6,9 ms 0+ SF = 100
263Sg 0,8 s 9,59 (α) SF ≈ 70, α ≈ 30
263m1Sg 0,31 s [9/2+] α ≈ 100
264Sg 0+
265Sg 10 s 9,2 (α) [1/2+ ] α > 50, SF < 50
266Sg 21 s 9,1 (α) 0+ α = 50, SF = 50
271Sg 2,4 min α > 50, SF < 50

107 Bohrium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
260Bh 10,0 α = ?
261Bh 11,8 ms 10,56 (α) α = 95, SF < 10
262Bh 102 ms 10,42 (α) α > 80, SF < 20
262m1Bh 8,0 ms α > 70, SF < 30
263Bh
264Bh 0,44 s α = 100
265Bh 0,94 (-0,31 … + 0,70) s 9,24 +/-0,05 α = 100
266Bh 1,7 s α = 100
267Bh 17 s α = 100
271Bh α = 100
272Bh 9,8 s α = 100

108 Hassium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
263Hs <1 s 7/2+ α = ?
264Hs 0,26 ms 10,8 (α) 0+ α ≈ 100, SF < 1,5
265Hs 0,9 ms 10,82 α ≈ 100
265m1Hs 1,55 ms [1/2+] α ≈ 100, SF < 9
266Hs 2,3 ms 0+ α = 100
267Hs 59 ms [9/2+] α = 100
268Hs 0+
269Hs 9,7 s [3/2+] α = 100
270Hs 30 s 0+ α = 100 (?)
275Hs 0,19 s α = 100
277Hs 16,5 min α > 50, SF < 50
278Hs 11 min 0+ SF = 100

109 Meitnerium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
266Mt 1,7 ms 11,269 α = 100
266m1Mt 3,8 ms α = 100, SF < 5,5
267Mt
268Mt 0,07 s [5+,6+] α = 100
270Mt 5,0 ms α = 100
274Mt 20 s α = 100
275Mt 9,7 ms α = 100
276Mt 0,72 s α = 100

110 Darmstadtium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
267Ds 3,1 µs [11/2−] α = 100
268Ds 0+
269Ds 0,17 ms [1/2+] α = 100
270Ds 6,0 ms 0+ α = 100
270m1Ds 0,1 ms α = 100
271Ds 56 ms [3/2+] α = 100
271m1Ds 1,1 ms [9/2+] α = 100
272Ds 0+
273Ds 0,17 ms [3/2+] α = 100
273m1Ds 120 ms [13/2−] α = 100
279Ds 0,18 s SF > 70, α < 30
280Ds 7,6 s 0+
281Ds 9,6 s SF = 100
282Ds 1,1 min 0+ α = 100

111 Roentgenium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
272Rg 3,8 ms 11,44 [5+,6+] α = 100
274Rg 6,4 ms 11,6 α = 100
278Rg 4,2 ms 10,7 α = 100
279Rg 170 ms 10,5 α = 100
280Rg 3,6 s 10,0 α = 100

112 Copernicium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
277Cn 0,69 ms 11,62 [3/2+] α = 100
278Cn 11,38 α , SF
279Cn 10,96 α , SF
280Cn 10,62 α , SF
282Cn 0,5 ms 0+ SF = 100
283Cn 4 s 9,62 (α) α > 90, SF < 10
284Cn 101 ms 0+ SF = 100
285Cn 34 s 8,79 α = 100

113 Ununtrium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
278Uut 0,24 ms α = 100
283Uut 100 ms 10,6 α = 100
284Uut 0,48 s 10,3 α = 100
285Uut 10,0 α , SF
286Uut 9,7 α , SF
287Uut 9,3 α , SF

114 Flerovium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
286Fl 0,16 s 10,7 (α) 0+ α ≈ 40, SF ≈ 60
287Fl 0,51 s 10,44 α = 100
288Fl 0,8 s 9,97 0+ α = 100
289Fl 2,7 s 9,85 α = 100

115 Ununpentium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
287Uup 32 ms 11,3 α = 100
288Uup 87 ms 11,0 α = 100
289Uup 10 s 10,6 α , SF
290Uup 10 s 10,3 α , SF
291Uup 1 min 10,0 α , SF

116 Livermorium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
289Lv 10 ms α = 100
290Lv 15 ms 11,3 0+ α = 100
291Lv 6,3 ms 11,0 α = 100
292Lv 18 ms 10,71 0+ α = 100
293Lv 53 ms α = 100

117 Ununseptium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
291Uus ~10 ms 11,9 α , SF
292Uus ~50 ms 11,6 α , SF

118 Ununoctium

Isotop Halbwertszeit Zerfallsenergie in MeV Spin / Parität Zerfallsart(en) Häufigkeit in %
294Uuo 1,8 ms 0+ α = 100
Liste der Isotope

1. Periode | 2. Periode | 3. Periode | 4. Periode | 5. Periode | 6. Periode | 7. Periode

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