Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 36
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
139
Sb
51
0
138.94598
+7/2
150 Nanosekunden (ns)
β
-
>0%
nβ
-
>0%
140
Te
52
0
139.93885
0
3 Millisekunden (ms)
β
-
>0%
nβ
-
>0%
141
I
53
0
140.93503
+7/2
430 Millisekunden (ms)
β
-
78.8%
nβ
-
21.2%
142
Xe
54
0
141.92971
0
1.25 Sekunden
β
-
99.79%
nβ
-
0.79%
143
Cs
55
0
142.927352
+3/2
1.791 Sekunden
β
-
98.36%
nβ
-
1.64%
144
Ba
56
0
143.922953
0
11.5 Sekunden
β
-
96.4%
nβ
-
3.6%
145
La
57
0
144.921646
+5/2
24.8 Sekunden
β
-
100%
146
Ce
58
0
145.918759
0
13 Minuten 31.2 Sekunden
β
-
100%
147
Pr
59
0
146.918996
+3/2
13 Minuten 24 Sekunden
β
-
100%
148
Nd
60
0
147.916893
0
5.76
stabil
149
Pm
61
0
148.918334
+7/2
2 Tage 5 Stunden 4 Minuten
β
-
100%
149m
Pm
61
0.2402
148.918592
-11/2
35 Mikrosekunden (μs)
it
100%
150
Sm
62
0
149.917276
0
7.38
stabil
151
Eu
63
0
150.91985
+5/2
47.81
1.7 Trillionen Jahre
α
100%
151m
Eu
63
0.1962
150.920061
-11/2
58.9 Mikrosekunden (μs)
it
100%
152
Gd
64
0
151.919791
0
0.2
108 Billionen Jahre
α
100%
153
Tb
65
0
152.923435
+5/2
2 Tage 8 Stunden 9 Minuten
ε
100%
153m
Tb
65
0.1632
152.92361
-11/2
186 Mikrosekunden (μs)
it
100%
154
Dy
66
0
153.924425
0
3 Millionen Jahre
α
100%
155
Ho
67
0
154.929103
+5/2
48 Minuten
ε
100%
155m
Ho
67
0.142
154.929256
-11/2
880 Mikrosekunden (μs)
it
100%
156
Er
68
0
155.931065
0
19 Minuten 30 Sekunden
ε
100%
α
1.7e-5%
157
Tm
69
0
156.936973
+1/2
3 Minuten 37.8 Sekunden
ε
100%
158
Yb
70
0
157.939867
0
1 Minuten 29.4 Sekunden
ε
100%
α
2.1e-3%
159
Lu
71
0
158.946629
+1/2
12.1 Sekunden
ε
99.9%
α
0.1%
159m
Lu
71
0.1
158.946736
-11/2
10 Sekunden
ε
90%
α
10%
160
Hf
72
0
159.950684
0
13.6 Sekunden
e
99.3%
α
0.7%
161
Ta
73
0
160.958417
+1/2
3 Sekunden
ε
95%
α
5%
161m
Ta
73
0.05
160.958471
-11/2
2.89 Sekunden
ε
>0%
α
>0%
162
W
74
0
161.963498
0
1.36 Sekunden
α
45.2%
ε
54.8%
163
Re
75
0
162.972081
+1/2
390 Millisekunden (ms)
α
32%
ε
68%
163m
Re
75
0.115
162.972205
-11/2
214 Millisekunden (ms)
α
66%
ε
34%
164
Os
76
0
163.978036
0
21 Millisekunden (ms)
α
98%
ε
2%
165
Ir
77
0
164.98752
+1/2
unbekannt
p
>0%
α
>0%
165m
Ir
77
0.18
164.987713
-11/2
15.1 Millisekunden (ms)
p
>0%
α
>0%
ε
>0%
166
Pt
78
0
165.994856
0
300 Mikrosekunden (μs)
α
100%