Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 23
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
202
Ir
77
0
201.978529
-1
11 Sekunden
β
-
100%
203
Pt
78
0
202.979066
-1/2
10 Sekunden
β
-
100%
204
Au
79
0
203.977724
-2
39.8 Sekunden
β
-
100%
205
Hg
80
0
204.976073
-1/2
5 Minuten 8.4 Sekunden
β
-
100%
205m
Hg
80
1.5564
204.977744
+13/2
1.1 Millisekunden (ms)
it
100%
206
Tl
81
0
205.97611
0
4 Minuten 12.12 Sekunden
β
-
100%
206m
Tl
81
2.6431
205.978948
-12
3 Minuten 44.4 Sekunden
it
100%
207
Pb
82
0
206.975898
-1/2
22.1
stabil
207m
Pb
82
1.6334
206.977651
+13/2
806 Millisekunden (ms)
it
100%
208
Bi
83
0
207.979742
+5
368000 Jahre
ε
100%
208m
Bi
83
1.5711
207.981429
-10
2.6 Millisekunden (ms)
it
100%
209
Po
84
0
208.98243
-1/2
102 Jahre
α
99.52%
ε
0.48%
210
At
85
0
209.987148
+5
8 Stunden 6 Minuten
ε
99.82%
α
0.18%
210m
At
85
2.5496
209.989885
-15
482 Mikrosekunden (μs)
it
100%
210m
At
85
4.0277
209.991472
+19
5.7 Mikrosekunden (μs)
it
100%
211
Rn
86
0
210.990601
-1/2
14 Stunden 36 Minuten
ε
72.6%
α
27.4%
212
Fr
87
0
211.996203
+5
20 Minuten
ε
57%
α
43%
213
Ra
88
0
213.000383
-1/2
2 Minuten 43.8 Sekunden
α
80%
ε
20%
213m
Ra
88
1.77
213.002283
-15/2
2.2 Millisekunden (ms)
it
99%
α
1%
214
Ac
89
0
214.006901
+5
8.2 Sekunden
α
90%
ε
10%
215
Th
90
0
215.01173
-1/2
1.2 Sekunden
α
100%
216
Pa
91
0
216.019109
unbekannt
150 Millisekunden (ms)
α
98%
ε
2%
217
U
92
0
217.024369
-1/2
16 Millisekunden (ms)
α
100%