Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 57
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
147
Xe
54
0
146.95356
-3/2
100 Millisekunden (ms)
β
-
92%
nβ
-
8%
149
Cs
55
0
148.95293
+3/2
50 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
151
Ba
56
0
150.95081
-3/2
300 Nanosekunden (ns)
β
-
>0%
nβ
-
>0%
153
La
57
0
152.94962
+5/2
150 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
155
Ce
58
0
154.94804
-5/2
200 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
157
Pr
59
0
156.94743
-5/2
300 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
159
Nd
60
0
158.94609
+7/2
500 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
161
Pm
61
0
160.94586
-5/2
700 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
163
Sm
62
0
162.94536
-1/2
1 Sekunden
β
-
>0%
nβ
-
>0%
165
Eu
63
0
164.945721
+5/2
2.3 Sekunden
β
-
100%
167
Gd
64
0
166.94557
-5/2
3 Sekunden
β
-
100%
169
Tb
65
0
168.94622
+3/2
2 Sekunden
β
-
100%
171
Dy
66
0
170.9462
-7/2
6 Sekunden
β
-
100%
173
Ho
67
0
172.94729
-7/2
10 Sekunden
β
-
100%
175
Er
68
0
174.94777
+9/2
1 Minuten 12 Sekunden
β
-
100%
177
Tm
69
0
176.94904
-7/2
1 Minuten 30 Sekunden
β
-
100%
179
Yb
70
0
178.95017
-1/2
8 Minuten
β
-
100%
181
Lu
71
0
180.95197
+7/2
3 Minuten 30 Sekunden
β
-
100%
183
Hf
72
0
182.95353
-3/2
1 Stunden 4 Minuten 1.1999999999998 Sekunden
β
-
100%
185
Ta
73
0
184.95556
+7/2
49 Minuten 24 Sekunden
β
-
100%
185m
Ta
73
1.308
184.956964
-23/2
1 Millisekunden (ms)
it
100%
187
W
74
0
186.95716
-3/2
23 Stunden 43 Minuten 12 Sekunden
β
-
100%
189
Re
75
0
188.959229
+5/2
1 Tage 18 Minuten
β
-
100%
191
Os
76
0
190.960931
-9/2
15 Tage 9 Stunden
β
-
100%
191m
Os
76
0.0744
190.96101
-3/2
13 Stunden 6 Minuten
it
100%
193
Ir
77
0
192.962927
+3/2
62.7
stabil
193m
Ir
77
0.0802
192.963013
-11/2
10 Tage 12 Stunden 43 Minuten
it
100%
195
Pt
78
0
194.964792
-1/2
33.832
stabil
195m
Pt
78
0.2593
194.96507
+13/2
4 Tage 14 Minuten
it
100%
197
Au
79
0
196.966569
+3/2
100
stabil
197m
Au
79
0.4092
196.967008
-11/2
7.73 Sekunden
it
100%
199
Hg
80
0
198.96828
-1/2
16.87
stabil
199m
Hg
80
0.5325
198.968852
+13/2
42 Minuten 40.2 Sekunden
it
100%
201
Tl
81
0
200.970819
+1/2
3 Tage 1 Stunden 37.440000000002 Sekunden
ε
100%
201m
Tl
81
0.9192
200.971806
-9/2
2 Millisekunden (ms)
it
100%
203
Pb
82
0
202.973391
-5/2
2 Tage 3 Stunden 55 Minuten
ε
100%
203m
Pb
82
0.8252
202.974277
+13/2
6.21 Sekunden
it
100%
203m
Pb
82
2.9234
202.97653
-25/2
122 Nanosekunden (ns)
it
100%
203m
Pb
82
2.9492
202.976557
-29/2
480 Millisekunden (ms)
it
100%
205
Bi
83
0
204.977389
-9/2
15 Tage 7 Stunden
ε
100%
207
Po
84
0
206.981593
-5/2
5 Stunden 48 Minuten
ε
99.98%
α
0.02%
207m
Po
84
0.0686
206.981667
-1/2
205 Nanosekunden (ns)
it
100%
207m
Po
84
1.115
206.98279
+13/2
49 Mikrosekunden (μs)
it
100%
207m
Po
84
1.383
206.983078
-19/2
2.79 Sekunden
it
100%
209
At
85
0
208.986173
-9/2
5 Stunden 24 Minuten 36 Sekunden
ε
95.9%
α
4.1%
211
Rn
86
0
210.990601
-1/2
14 Stunden 36 Minuten
ε
72.6%
α
27.4%
213
Fr
87
0
212.99619
-9/2
34.82 Sekunden
α
99.44%
ε
0.56%
215
Ra
88
0
215.00272
+9/2
1.6 Millisekunden (ms)
α
100%
215m
Ra
88
1.8778
215.004736
+25/2
7.1 Mikrosekunden (μs)
it
100%
215m
Ra
88
2.2469
215.005132
-29/2
1.4 Mikrosekunden (μs)
it
100%
215m
Ra
88
3.8
215.006799
-43/2
555 Nanosekunden (ns)
it
100%
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%
219
Th
90
0
219.015537
+9/2
1.1 Mikrosekunden (μs)
α
100%
221
Pa
91
0
221.021878
-9/2
5.9 Mikrosekunden (μs)
α
100%
223
U
92
0
223.027739
+7/2
18 Mikrosekunden (μs)
α
99.8%
ε
0.2%
225
Np
93
0
225.033914
-9/2
3 Millisekunden (ms)
α
100%