Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 22
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
139
Sb
51
0
138.94598
+7/2
150 Nanosekunden (ns)
β
-
>0%
nβ
-
>0%
139
Te
52
0
138.93473
-5/2
150 Nanosekunden (ns)
β
-
>0%
nβ
-
>0%
139
I
53
0
138.9261
+7/2
2.28 Sekunden
β
-
90%
nβ
-
10%
139
Xe
54
0
138.918794
-3/2
39.68 Sekunden
β
-
100%
139
Cs
55
0
138.913364
+7/2
9 Minuten 16.2 Sekunden
β
-
100%
139
Ba
56
0
138.908841
-7/2
1 Stunden 23 Minuten 3.6 Sekunden
β
-
100%
139
La
57
0
138.906353
+7/2
99.9098
stabil
139
Ce
58
0
138.906653
+3/2
137 Tage 15 Stunden
ε
100%
139m
Ce
58
0.7542
138.907463
-11/2
54.8 Sekunden
it
100%
139
Pr
59
0
138.908938
+5/2
4 Stunden 24 Minuten 36 Sekunden
ε
100%
139
Nd
60
0
138.911978
+3/2
29 Minuten 42 Sekunden
ε
100%
139m
Nd
60
0.2312
138.912226
-11/2
5 Stunden 30 Minuten
ε
88.2%
it
11.8%
139m
Nd
60
2.5709
138.914738
unbekannt
150 Nanosekunden (ns)
it
100%
139
Pm
61
0
138.916804
+5/2
4 Minuten 9 Sekunden
ε
100%
139m
Pm
61
0.1887
138.917007
-11/2
180 Millisekunden (ms)
it
99.93%
ε
0.07%
139
Sm
62
0
138.922297
+1/2
2 Minuten 34.2 Sekunden
ε
100%
139m
Sm
62
0.4574
138.922788
-11/2
10.7 Sekunden
it
93.7%
ε
6.3%
139
Eu
63
0
138.929792
-11/2
17.9 Sekunden
ε
100%
139
Gd
64
0
138.93824
-9/2
5.8 Sekunden
ε
>0%
pε
>0%
139m
Gd
64
0.25
138.938508
+1/2
4.8 Sekunden
ε
>0%
pε
>0%
139
Tb
65
0
138.94829
-11/2
1.6 Sekunden
ε
>0%
pε
>0%
139
Dy
66
0
138.95954
+7/2
600 Millisekunden (ms)
ε
>0%
pε
>0%
p
>0%