Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 33
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
149
Cs
55
0
148.95293
+3/2
50 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
150
Ba
56
0
149.94568
0
300 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
151
La
57
0
150.941721
+5/2
300 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
152
Ce
58
0
151.93654
0
1.4 Sekunden
β
-
100%
153
Pr
59
0
152.93384
-5/2
4.28 Sekunden
β
-
100%
154
Nd
60
0
153.929477
0
25.9 Sekunden
β
-
100%
154m
Nd
60
0.48
153.929993
+3
1.3 Mikrosekunden (μs)
it
100%
154m
Nd
60
1.349
153.930925
-5
1 Mikrosekunden (μs)
it
100%
155
Pm
61
0
154.928101
-5/2
41.5 Sekunden
β
-
100%
156
Sm
62
0
155.925528
0
9 Stunden 24 Minuten
β
-
100%
156m
Sm
62
1.3976
155.927028
-5
185 Nanosekunden (ns)
it
100%
157
Eu
63
0
156.925424
+5/2
15 Stunden 10 Minuten 48 Sekunden
β
-
100%
158
Gd
64
0
157.924105
0
24.84
stabil
159
Tb
65
0
158.925347
+3/2
100
stabil
160
Dy
66
0
159.925198
0
2.34
stabil
161
Ho
67
0
160.927855
-7/2
2 Stunden 28 Minuten 48 Sekunden
ε
100%
161m
Ho
67
0.2112
160.928082
+1/2
6.76 Sekunden
it
100%
162
Er
68
0
161.928781
0
0.139
stabil
163
Tm
69
0
162.932651
+1/2
1 Stunden 48 Minuten 36 Sekunden
ε
100%
164
Yb
70
0
163.934489
0
1 Stunden 15 Minuten 48 Sekunden
ε
100%
165
Lu
71
0
164.939407
+1/2
10 Minuten 44.4 Sekunden
ε
100%
166
Hf
72
0
165.942181
0
6 Minuten 46.2 Sekunden
ε
100%
167
Ta
73
0
166.948093
+3/2
1 Minuten 20 Sekunden
ε
100%
168
W
74
0
167.951808
0
53 Sekunden
ε
100%
α
3.2e-3%
169
Re
75
0
168.958792
-9/2
8.1 Sekunden
ε
100%
α
0.01%
169m
Re
75
1.45
168.960349
+1/2
15.1 Sekunden
ε
100%
170
Os
76
0
169.963578
0
7.37 Sekunden
ε
90.5%
α
9.5%
171
Ir
77
0
170.971626
+1/2
3.2 Sekunden
ε
>0%
α
>0%
p
>0%
171m
Ir
77
0.18
170.971819
-11/2
1.4 Sekunden
α
58%
ε
42%
it
>0%
172
Pt
78
0
171.977347
0
96 Millisekunden (ms)
α
94%
ε
6%
173
Au
79
0
172.986238
+1/2
25 Millisekunden (ms)
α
94%
ε
>0%
p
>0%
173m
Au
79
0.214
172.986468
-11/2
14 Millisekunden (ms)
α
92%
ε
>0%
p
>0%
174
Hg
80
0
173.992864
0
2.1 Millisekunden (ms)
α
99.6%
p
0.4%