Isotopic abundance of some common Spin 1/2 NMR nuclei:
| Nucleus
|
%Abundance
|
Net Spin
|
| 2H
|
0.015
|
1
|
| 6Li
|
7.42
|
1
|
| 7Li
|
92.6
|
3/2
|
| 9Be
|
100
|
3/2
|
| 11B
|
80.4
|
3/2
|
| 10B
|
19.6
|
3
|
| 14N
|
99.6
|
1
|
| 17O
|
0.037
|
5/2
|
| 21Ne
|
0.257
|
3/2
|
| 23Na
|
100
|
3/2
|
| 25Mg
|
10.1
|
5/2
|
| 27Al
|
100
|
5/2
|
| 33S
|
0.76
|
3/2
|
| 35Cl
|
75.5
|
3/2
|
| 37Cl
|
24.5
|
3/2
|
| 41K
|
6.88
|
3/2
|
| 39K
|
93.1
|
3/2
|
| 43Ca
|
0.145
|
7/2
|
| 45Sc
|
100
|
7/2
|
| 47Ti
|
7.25
|
5/2
|
| 49Ti
|
5.51
|
7/2
|
| 51V
|
99.8
|
7/2
|
| 50V
|
0.24
|
6
|
| 53Cr
|
9.55
|
3/2
|
| 55Mn
|
100
|
5/2
|
| 59Co
|
100
|
7/2
|
| 61Ni
|
1.19
|
3/2
|
| 65Cu
|
30
|
3/2
|
| 63Cu
|
69.1
|
3/2
|
| 67Zn
|
4.11
|
5/2
|
| 71Ga
|
39.6
|
3/2
|
| 69Ga
|
60.4
|
3/2
|
| 73Ge
|
7.76
|
9/2
|
| 75As
|
100
|
3/2
|
| 79Br
|
50.5
|
3/2
|
| 81Br
|
49.5
|
3/2
|
| 83Kr
|
11.6
|
9/2
|
| 87Rb
|
27.9
|
3/2
|
| 85Rb
|
72.2
|
5/2
|
| 87Sr
|
7.02
|
9/2
|
| 91Zr
|
11.2
|
5/2
|
| 93Nb
|
100
|
9/2
|
| 97Mo
|
9.46
|
5/2
|
| 95Mo
|
15.7
|
5/2
|
| 99Ru
|
12.7
|
3/2
|
| 101Ru
|
17.1
|
5/2
|
| 105Pd
|
22.2
|
5/2
|
| 113In
|
4.28
|
9/2
|
| 115In
|
95.7
|
9/2
|
| 121Sb
|
57.3
|
5/2
|
| 123Sb
|
42.8
|
7/2
|
| 127I
|
100
|
5/2
|
| 131Xe
|
21.2
|
3/2
|
| 133Cs
|
100
|
7/2
|
| 135Ba
|
6.59
|
3/2
|
| 137Ba
|
11.3
|
3/2
|
| 139La
|
99.9
|
7/2
|
| 138La
|
0.089
|
5
|
| 141Pr
|
100
|
5/2
|
| 143Nd
|
12.2
|
7/2
|
| 145Nd
|
8.3
|
7/2
|
| 147Sm
|
13.8
|
7/2
|
| 153Eu
|
52.2
|
5/2
|
| 151Eu
|
47.8
|
5/2
|
| 157Gd
|
15.7
|
3/2
|
| 155Gd
|
14.7
|
3/2
|
| 159Tb
|
100
|
3/2
|
| 161Dy
|
18.9
|
5/2
|
| 163Dy
|
25
|
5/2
|
| 165Ho
|
100
|
7/2
|
| 167Er
|
22.9
|
7/2
|
| 173Yb
|
14.3
|
5/2
|
| 175Lu
|
37.4
|
7/2
|
| 179Hf
|
13.8
|
9/2
|
| 181Ta
|
100
|
7/2
|
| 187Re
|
62.9
|
5/2
|
| 185Re
|
37.1
|
5/2
|
| 189Os
|
16.1
|
3/2
|
| 191Ir
|
37.3
|
3/2
|
| 193Ir
|
62.7
|
3/2
|
| 197Au
|
100
|
3/2
|
| 201Hg
|
13.2
|
3/2
|
| 177Hf
|
18.5
|
7/2
|
| 209Bi
|
100
|
9/2
|
| 229Th
|
0
|
5/2
|
| 235U
|
0.72
|
7/2
|
