Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 20
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
212
Hg
80
0
212.00303
0
β
-
100%
212
Tl
81
0
211.998228
+5
30 Sekunden
β
-
100%
nβ
-
>0%
212
Pb
82
0
211.991898
0
0.0000000000054324
10 Stunden 38 Minuten 24 Sekunden
β
-
100%
212m
Pb
82
1.335
211.993331
+8
5 Mikrosekunden (μs)
it
100%
212
Bi
83
0
211.991286
-1
0.00000000084879
1 Stunden 33 Sekunden
β
-
64.06%
α
35.94%
212m
Bi
83
0.25
211.991554
-9
25 Minuten
α
67%
β
-
30%
αβ
-
3%
212m
Bi
83
1.91
211.993336
unbekannt
7 Minuten
β
-
100%
α
>0%
it
>0%
212
Po
84
0
211.988868
0
0.0000000000018965
299 Nanosekunden (ns)
α
100%
212m
Po
84
2.922
211.992005
+18
45.1 Sekunden
α
99.93%
it
0.07%
212
At
85
0
211.990745
-1
314 Millisekunden (ms)
α
100%
β
-
>0%
ε
>0%
212m
At
85
0.223
211.990984
-9
119 Millisekunden (ms)
α
99%
it
1%
212m
At
85
4.7716
211.995868
-25
152 Mikrosekunden (μs)
it
100%
212
Rn
86
0
211.990704
0
23 Minuten 54 Sekunden
α
100%
212
Fr
87
0
211.996203
+5
20 Minuten
ε
57%
α
43%
212
Ra
88
0
211.999795
0
13 Sekunden
α
85%
ε
15%
212m
Ra
88
1.9584
212.001897
+8
10.9 Mikrosekunden (μs)
it
100%
212m
Ra
88
2.6134
212.0026
-11
850 Nanosekunden (ns)
it
100%
212
Ac
89
0
212.007814
+6
930 Millisekunden (ms)
α
57%
ε
43%
212
Th
90
0
212.01298
0
30 Millisekunden (ms)
α
99.7%
ε
3%
212
Pa
91
0
212.023204
+7
5.1 Millisekunden (ms)
α
100%