Das Periodensystem der Elemente online
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Nuklide nach Selektion gefunden: 20
Nuklid
Level
(MeV)
Atommasse (u)
Spin
% nat.
Halbwertszeit
Zerfall
%
14
Be
4
0
14.042892
0
4.4 Millisekunden (ms)
β
-
14%
nβ
-
81%
2nβ
-
5%
15
B
5
0
15.031103
-3/2
10.5 Millisekunden (ms)
β
-
100%
16
C
6
0
16.014701
0
747 Millisekunden (ms)
β
-
100%
17
N
7
0
17.00845
-1/2
4.173 Sekunden
β
-
4.9%
nβ
-
95.1%
18
O
8
0
17.999162
0
0.2
stabil
19
F
9
0
18.998404
+1/2
100
stabil
19m
F
9
4.6825
19.003431
-5/2
10.7 Femtosekunden (fs)
it
100%
19m
F
9
5.1066
19.003886
+5/2
21 Femtosekunden (fs)
it
100%
19m
F
9
5.337
19.004133
+1/2
100 Attosekunden (as)
it
100%
19m
F
9
5.4635
19.004269
+7/2
1 Sekunden
it
100%
19m
F
9
5.621
19.004438
-5/2
900 Attosekunden (as)
it
100%
20
Ne
10
0
19.99244
0
90.48
stabil
20m
Ne
10
5.6214
19.998475
-3
139 Femtosekunden (fs)
it
100%
21
Na
11
0
20.997655
+3/2
22.49 Sekunden
ε
100%
22
Mg
12
0
21.999575
0
3.8755 Sekunden
ε
100%
23
Al
13
0
23.007267
+5/2
470 Millisekunden (ms)
ε
99.53%
pε
0.47%
23m
Al
13
0.55
23.007857
+1/2
6.2 Attosekunden (as)
p
100%
it
8.5e-7%
24
Si
14
0
24.011545
0
140 Millisekunden (ms)
ε
62%
pε
38%
25
P
15
0
25.02026
+1/2
unbekannt
p
>0%
pε
>0%
26
S
16
0
26.02788
0
10 Millisekunden (ms)
ε
>0%
pε
>0%
2pε
>0%