Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 23
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
198
Os
76
0
197.97441
0
β
-
100%
199
Ir
77
0
198.973806
+3/2
6 Sekunden
β
-
100%
200
Pt
78
0
199.971442
0
12 Stunden 36 Minuten
β
-
100%
201
Au
79
0
200.971657
+3/2
26 Minuten
β
-
100%
202
Hg
80
0
201.970644
0
29.86
stabil
203
Tl
81
0
202.972344
+1/2
29.52
stabil
203m
Tl
81
3.4
202.975888
+25/2
7.7 Mikrosekunden (μs)
it
100%
204
Pb
82
0
203.973044
0
1.4
140 Billiarden Jahre
α
100%
204m
Pb
82
1.274
203.974412
+4
265 Nanosekunden (ns)
it
100%
204m
Pb
82
2.1858
203.975391
-9
1 Stunden 7 Minuten 12 Sekunden
it
100%
204m
Pb
82
2.2643
203.975475
-7
450 Nanosekunden (ns)
it
100%
205
Bi
83
0
204.977389
-9/2
15 Tage 7 Stunden
ε
100%
206
Po
84
0
205.980482
0
8 Tage 19 Stunden 12 Minuten
ε
94.55%
α
5.45%
206m
Po
84
1.5859
205.982184
+8
222 Nanosekunden (ns)
it
100%
206m
Po
84
2.2622
205.98291
-9
1.1 Mikrosekunden (μs)
it
100%
207
At
85
0
206.985783
-9/2
1 Stunden 48 Minuten
ε
91.4%
α
8.6%
208
Rn
86
0
207.989644
0
24 Minuten 21 Sekunden
α
62%
ε
38%
209
Fr
87
0
208.995954
-9/2
50 Sekunden
α
89%
ε
11%
210
Ra
88
0
210.000495
0
3.7 Sekunden
α
96%
ε
4%
210m
Ra
88
1.8
210.002427
+8
2.2 Mikrosekunden (μs)
it
100%
211
Ac
89
0
211.007735
-9/2
210 Millisekunden (ms)
α
100%
212
Th
90
0
212.01298
0
30 Millisekunden (ms)
α
99.7%
ε
3%
213
Pa
91
0
213.021109
-9/2
5.3 Millisekunden (ms)
α
100%