Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 23
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
207
Au
79
0
206.9884
unbekannt
β
-
100%
208
Hg
80
0
207.98594
0
41 Minuten
β
-
100%
209
Tl
81
0
208.985359
+1/2
2 Minuten 12 Sekunden
β
-
100%
210
Pb
82
0
209.984189
0
0.000000083179
22 Jahre
β
-
100%
α
1.9e-6%
210m
Pb
82
1.278
209.985561
+8
201 Nanosekunden (ns)
it
100%
211
Bi
83
0
210.987269
-9/2
0.0000000000011875
2 Minuten 8.4 Sekunden
α
99.72%
β
-
0.28%
211m
Bi
83
1.257
210.988619
-25/2
1.4 Mikrosekunden (μs)
it
100%
212
Po
84
0
211.988868
0
0.0000000000018965
299 Nanosekunden (ns)
α
100%
212m
Po
84
2.922
211.992005
+18
45.1 Sekunden
α
99.93%
it
0.07%
213
At
85
0
212.992937
-9/2
125 Nanosekunden (ns)
α
100%
214
Rn
86
0
213.995363
0
270 Nanosekunden (ns)
α
100%
214m
Rn
86
1.4427
213.996912
+6
690 Pikosekunden (ps)
it
100%
α
>0%
214m
Rn
86
1.6251
213.997108
+8
6.5 Nanosekunden (ns)
it
90%
α
10%
215
Fr
87
0
215.000341
-9/2
86 Nanosekunden (ns)
α
100%
216
Ra
88
0
216.003533
0
182 Nanosekunden (ns)
α
100%
ε
1e-8%
216m
Ra
88
1.5076
216.005152
+6
100 Pikosekunden (ps)
α
0.58%
it
99.42%
216m
Ra
88
1.7111
216.00537
+8
1.4 Nanosekunden (ns)
α
1.86%
it
98.14%
216m
Ra
88
2.026
216.005708
+10
600 Pikosekunden (ps)
α
0.12%
it
99.88%
217
Ac
89
0
217.009347
-9/2
69 Nanosekunden (ns)
α
98%
ε
2%
217m
Ac
89
2.012
217.011507
+29/2
740 Nanosekunden (ns)
α
100%
218
Th
90
0
218.013284
0
117 Nanosekunden (ns)
α
100%
219
Pa
91
0
219.019883
-9/2
53 Nanosekunden (ns)
α
100%
220
U
92
0
220.024723
0
60 Nanosekunden (ns)
α
100%
ε
>0%