Das Periodensystem der Elemente online
Startseite
Nuklidkarte
Rechenhilfen
Listen
Nuklidliste
Nuklide nach Selektion gefunden: 22
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
242
Fm
100
0
242.07343
0
800 Mikrosekunden (μs)
f
100%
α
>0%
ε
>0%
243
Fm
100
0
243.074353
-7/2
180 Millisekunden (ms)
α
100%
f
>0%
ε
>0%
244
Fm
100
0
244.074084
0
3.3 Millisekunden (ms)
f
100%
α
>0%
ε
>0%
245
Fm
100
0
245.075385
+1/2
4.2 Sekunden
α
99.9%
f
0.1%
ε
>0%
246
Fm
100
0
246.075299
0
1.1 Sekunden
α
92%
f
8%
ε
>0%
247
Fm
100
0
247.076848
+7/2
29 Sekunden
ε
50%
α
50%
f
>0%
247m
Fm
100
0.1
247.076955
+1/2
4.3 Sekunden
α
100%
it
>0%
f
>0%
ε
>0%
248
Fm
100
0
248.077195
0
36 Sekunden
α
93%
ε
7%
f
0.1%
249
Fm
100
0
249.079033
+7/2
2 Minuten 36 Sekunden
ε
67%
α
33%
250
Fm
100
0
250.079521
0
30 Minuten
α
90%
ε
10%
f
6.9e-3%
250m
Fm
100
1.5
250.081132
+8
1.8 Sekunden
it
80%
α
20%
ε
>0%
f
8e-5%
251
Fm
100
0
251.081575
-9/2
5 Stunden 18 Minuten
ε
98.2%
α
1.8%
251m
Fm
100
0.191
251.08178
+5/2
15.2 Mikrosekunden (μs)
it
100%
f
>0%
252
Fm
100
0
252.082466
0
1 Tage 1 Stunden 23 Minuten 24 Sekunden
α
100%
f
2.3e-3%
253
Fm
100
0
253.085185
+1/2
3 Tage
ε
88%
α
12%
254
Fm
100
0
254.086854
0
3 Stunden 14 Minuten 24 Sekunden
α
99.94%
f
0.06%
255
Fm
100
0
255.089962
+7/2
20 Stunden 4 Minuten 12 Sekunden
α
100%
f
2.4e-5%
256
Fm
100
0
256.091773
0
2 Stunden 37 Minuten 36 Sekunden
sf
91.9%
α
8.1%
257
Fm
100
0
257.095105
+9/2
100 Tage 12 Stunden
α
99.79%
f
0.21%
258
Fm
100
0
258.097076
0
370 Mikrosekunden (μs)
f
100%
α
>0%
259
Fm
100
0
259.100595
+3/2
1.5 Sekunden
f
100%
α
>0%
260
Fm
100
0
260.102678
0
4 Millisekunden (ms)
f
100%