Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 34
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
146
Xe
54
0
145.94775
0
146 Millisekunden (ms)
β
-
93.1%
nβ
-
6.9%
147
Cs
55
0
146.944155
+3/2
235 Millisekunden (ms)
β
-
57%
nβ
-
43%
148
Ba
56
0
147.93772
0
612 Millisekunden (ms)
β
-
99.6%
nβ
-
0.4%
149
La
57
0
148.934734
-3/2
1.05 Sekunden
β
-
98.57%
nβ
-
1.43%
150
Ce
58
0
149.930409
0
4 Sekunden
β
-
100%
151
Pr
59
0
150.928319
-3/2
18.9 Sekunden
β
-
100%
152
Nd
60
0
151.924682
0
11 Minuten 24 Sekunden
β
-
100%
153
Pm
61
0
152.924118
-5/2
5 Minuten 15 Sekunden
β
-
100%
154
Sm
62
0
153.922209
0
22.75
stabil
155
Eu
63
0
154.922893
+5/2
4 Jahre 275 Tage
β
-
100%
156
Gd
64
0
155.922123
0
20.47
stabil
156m
Gd
64
2.1376
155.924418
-7
1.3 Mikrosekunden (μs)
it
100%
157
Tb
65
0
156.924025
+3/2
71 Jahre
ε
100%
158
Dy
66
0
157.92441
0
0.1
stabil
159
Ho
67
0
158.927713
-7/2
33 Minuten 3 Sekunden
ε
100%
159m
Ho
67
0.2059
158.927934
+1/2
8.3 Sekunden
it
100%
160
Er
68
0
159.929083
0
1 Tage 4 Stunden 34 Minuten 48 Sekunden
ε
100%
161
Tm
69
0
160.933549
+7/2
30 Minuten 12 Sekunden
ε
100%
161m
Tm
69
0.0074
160.933628
+1/2
5 Minuten
ε
100%
161m
Tm
69
0.0782
160.933633
-7/2
110 Nanosekunden (ns)
it
100%
162
Yb
70
0
161.935769
0
18 Minuten 52.2 Sekunden
ε
100%
163
Lu
71
0
162.941179
+1/2
3 Minuten 58.2 Sekunden
ε
100%
164
Hf
72
0
163.944367
0
1 Minuten 51 Sekunden
ε
100%
165
Ta
73
0
164.950773
-5/2
31 Sekunden
ε
100%
166
W
74
0
165.955028
0
19.2 Sekunden
ε
99.96%
α
0.04%
167
Re
75
0
166.962601
-9/2
5.9 Sekunden
ε
99%
α
1%
167m
Re
75
0.13
166.962741
+1/2
3.4 Sekunden
α
100%
168
Os
76
0
167.967804
0
2.1 Sekunden
α
40%
ε
60%
169
Ir
77
0
168.976295
+1/2
353 Millisekunden (ms)
α
45%
ε
55%
p
>0%
169m
Ir
77
0.153
168.976459
-11/2
281 Millisekunden (ms)
α
72%
ε
28%
p
>0%
170
Pt
78
0
169.982496
0
13.8 Millisekunden (ms)
α
98%
ε
2%
171
Au
79
0
170.99188
+1/2
17 Mikrosekunden (μs)
p
100%
α
>0%
171m
Au
79
0.25
170.992148
-11/2
1 Millisekunden (ms)
α
54%
p
46%
172
Hg
80
0
171.998833
0
290 Mikrosekunden (μs)
α
100%
p
>0%