Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 21
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
248
No
102
0
248.086596
0
unbekannt
f
100%
249
No
102
0
249.08783
+5/2
57 Mikrosekunden (μs)
f
100%
250
No
102
0
250.087511
0
4.2 Mikrosekunden (μs)
f
99%
α
1%
250m
No
102
1.05
250.088638
+6
46 Mikrosekunden (μs)
f
100%
251
No
102
0
251.089012
+7/2
800 Millisekunden (ms)
α
84%
ε
16%
f
0.3%
251m
No
102
0.106
251.089126
+1/2
1.02 Sekunden
α
100%
252
No
102
0
252.088976
0
2.44 Sekunden
α
66.7%
f
32.2%
ε
1.1%
253
No
102
0
253.090678
-9/2
1 Minuten 37.2 Sekunden
α
100%
ε
>0%
253m
No
102
0.129
253.090816
+5/2
31 Mikrosekunden (μs)
f
100%
254
No
102
0
254.090955
0
51 Sekunden
α
90%
ε
10%
f
0.17%
254m
No
102
0.5
254.091009
+8
280 Millisekunden (ms)
α
100%
255
No
102
0
255.093241
+1/2
3 Minuten 6 Sekunden
α
61%
ε
39%
256
No
102
0
256.094283
0
2.91 Sekunden
α
99.47%
f
0.53%
257
No
102
0
257.096877
+7/2
25 Sekunden
α
98.5%
f
1.5%
258
No
102
0
258.098207
0
1.2 Millisekunden (ms)
f
100%
259
No
102
0
259.10103
+9/2
58 Minuten
α
75%
ε
25%
f
0%
260
No
102
0
260.102643
0
106 Millisekunden (ms)
f
100%
261
No
102
0
261.105748
+3/2
3 Stunden
α
100%
262
No
102
0
262.107302
0
5 Millisekunden (ms)
f
100%
263
No
102
0
263.110553
+3/2
20 Minuten
f
100%
α
>0%
264
No
102
0
264.112345
0
1 Minuten
α
100%
f
>0%