Precise Atomic Masses of the Isotopes
Isotope Precise Mass (u) Isotope Precise Mass (u)
01e
0.000 548 712
11p
1.007 276 05
10n
1.008 665 0
H-1
1.007 825
H-2
2.014 0
H-3
3.016 05
He-3
3.016 03
α 4.001 50
He-4
4.002 60
He-5
5.012 3
Li-5
5.012 5
Li-6
6.015 13
Li-7
7.016 01 Be-9
9.01
B-10
10.012 94
B-11
11.009 31
C-12
12.000 000 000
C-13
13.003 35
N-14
14.003 07
N-15
15.000 11
O-16
15.994 91
O-17
16.999 14
O-18
17.999 16
F-19
18.998 40
Ne-20
19.992 44
Ne-21
20.993 95
Ne-22
21.991 38
Na-23
22.989 8
Mg-24
23.985 04
Mg-25
24.985 84
Mg-26
25.982 59
Al-27
26.98153
Si-29
28.976 49
Si-30
29.973 76
P-31
30.973 76
S-32
31.972 07
S-33
32.971 46
S-34
33.967 86
Cl-35
36.965 90
Cl-37
36.96590
Ar-36
35.967 55
Ar-40
39.962 38
Fe-56
55.934 9
Pb-206
205.974 5
Po-210
209.982 9
U-235
235.043 9
U-238
238.050 8