Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 37
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
137
Sn
50
0
136.94599
-7/2
190 Millisekunden (ms)
β
-
42%
nβ
-
58%
138
Sb
51
0
137.94079
-2
300 Nanosekunden (ns)
β
-
>0%
nβ
-
>0%
139
Te
52
0
138.93473
-5/2
150 Nanosekunden (ns)
β
-
>0%
nβ
-
>0%
140
I
53
0
139.931
-4
860 Millisekunden (ms)
β
-
90.7%
nβ
-
9.3%
141
Xe
54
0
140.926648
-5/2
1.73 Sekunden
β
-
99.96%
nβ
0.04%
142
Cs
55
0
141.924299
0
1.684 Sekunden
β
-
99.91%
nβ
-
0.09%
143
Ba
56
0
142.920627
-5/2
14.5 Sekunden
β
-
100%
144
La
57
0
143.9196
-3
40.8 Sekunden
β
-
100%
145
Ce
58
0
144.917234
-5/2
3 Minuten 600 Millisekunden (ms)
β
-
100%
146
Pr
59
0
145.917644
-2
24 Minuten 9 Sekunden
β
-
100%
147
Nd
60
0
146.9161
-5/2
10 Tage 23 Stunden 31 Minuten
β
-
100%
148
Pm
61
0
147.917475
-1
5 Tage 8 Stunden 49 Minuten
β
-
100%
148m
Pm
61
0.1379
147.917623
-6
41 Tage 6 Stunden
β
-
95.8%
it
4.2%
149
Sm
62
0
148.917185
-7/2
13.82
stabil
150
Eu
63
0
149.919702
-5
36 Jahre 328 Tage
ε
100%
150m
Eu
63
0.0421
149.919747
0
12 Stunden 48 Minuten
β
-
89%
ε
11%
it
4.5e-8%
151
Gd
64
0
150.920349
-7/2
123 Tage 21 Stunden
ε
100%
α
8e-7%
152
Tb
65
0
151.924074
-2
17 Stunden 30 Minuten
ε
100%
α
7e-7%
152m
Tb
65
0.3422
151.924442
-5
960 Nanosekunden (ns)
it
100%
152m
Tb
65
0.5017
151.924613
+8
4 Minuten 12 Sekunden
it
78.8%
ε
21.2%
153
Dy
66
0
152.925765
-7/2
6 Stunden 24 Minuten
ε
99.9906%
α
9.4e-3%
154
Ho
67
0
153.930602
-2
11 Minuten 45.6 Sekunden
ε
99.98%
α
0.02%
154m
Ho
67
0.238
153.930857
+8
3 Minuten 6 Sekunden
ε
100%
α
1e-3%
155
Er
68
0
154.933209
-7/2
5 Minuten 18 Sekunden
ε
99.98%
α
0.02%
156
Tm
69
0
155.93898
-2
1 Minuten 23.8 Sekunden
ε
99.94%
α
0.06%
156m
Tm
69
0.2036
155.939199
-11
400 Nanosekunden (ns)
it
100%
157
Yb
70
0
156.942628
-7/2
38.6 Sekunden
ε
99.5%
α
0.5%
158
Lu
71
0
157.949313
-2
10.6 Sekunden
ε
99.09%
α
0.91%
159
Hf
72
0
158.953995
-7/2
5.6 Sekunden
ε
65%
α
35%
160
Ta
73
0
159.961486
-2
1.55 Sekunden
ε
66%
α
34%
160m
Ta
73
0.31
159.961819
+9
1.7 Sekunden
ε
>0%
α
>0%
161
W
74
0
160.967357
-7/2
409 Millisekunden (ms)
α
73%
ε
27%
162
Re
75
0
161.976002
-2
107 Millisekunden (ms)
α
94%
ε
6%
162m
Re
75
0.173
161.976188
+9
77 Millisekunden (ms)
α
91%
ε
9%
163
Os
76
0
162.98269
-7/2
5.5 Millisekunden (ms)
α
100%
ε
>0%
164
Ir
77
0
163.992201
-2
1 Millisekunden (ms)
p
100%
164m
Ir
77
0.27
163.992491
+9
94 Mikrosekunden (μs)
it
>0%
p
>0%
α
>0%
ε
>0%