|
|
For Isotopes
not listed see references below.
Isotope |
Mono Isotopic Mass |
Percent
natural abundance |
Average Mass |
|
|
|
|
| Hydrogen |
|
|
1.007 94 (7) |
| 1 H |
1.007 825 035 (12) |
99.985 (1) |
|
| 2 H |
2.014 101 779 (24) |
0.015(1) |
|
| 3 H |
3.016 049 27 (4) |
|
|
|
|
|
|
| Carbon |
|
|
12.011 (1) |
| 12 C |
12.0 exactly |
98.90 (3) |
|
| 13 C |
13.003 354 826 (17) |
1.10 (3) |
|
| 14 C |
14.003 241 982 (27) |
|
|
|
|
|
|
| Nitrogen |
|
|
14.006 74 (7) |
| 14 N |
14.003 074 002 (26) |
99.634 (9) |
|
| 15 N |
15.000 108 97 (4) |
0.366 (9) |
|
|
|
|
|
| Oxygen |
|
|
15.999 4 (3) |
| 16 O |
15.994 914 63 (5) |
99.762 (15) |
|
| 17 O |
16.999 131 2 (4) |
0.038 (3) |
|
| 18 O |
17.999 160 3 (9) |
0.200 (12) |
|
|
|
|
|
| Fluorine |
|
|
18.998 403 22 (15) |
| 19 F |
18.998 403 22 (15) |
100 |
|
|
|
|
|
| Sodium |
|
|
22.989 767 7 (10) |
| 23 Na |
22.989 767 7 (10) |
100 |
|
|
|
|
|
| Magnesium |
|
|
24.305 0 (6) |
| 24 Mg |
23.985 042 3 (3) |
78.99 (3) |
|
| 25 Mg |
24.985 837 4 (8) |
10.00 (1) |
|
| 26 Mg |
25.982 593 7 (8) |
11.01 (2) |
|
|
|
|
|
| Silicon |
|
|
28.085 5 (3) |
| 28 Si |
27.976 927 1 (7) |
92.23 (1) |
|
| 29 Si |
28.976 494 9 (7) |
4.67 (1) |
|
| 30 Si |
29.973 770 7 (7) |
3.10 (1) |
|
|
|
|
|
| Phosphorous |
|
|
30.973 762 0 (6) |
| 31 P |
30.973 762 0 (6) |
100 |
|
|
|
|
|
| Sulfur |
|
|
32.066 (6) |
| 32 S |
31.972 070 70 (25) |
95.02 (9) |
|
| 33 S |
32.971 458 54 (23) |
0.75 (4) |
|
| 34 S |
33.967 866 65 (22) |
4.21 (8) |
|
| 36 S |
35.967 080 62 (27) |
0.02 (1) |
|
|
|
|
|
| Chlorine |
|
|
35.452 7 (9) |
| 35 Cl |
34.968 852 721 (69) |
75.77 (7) |
|
| 37 Cl |
36.965 902 62 (11) |
24.23 (7) |
|
|
|
|
|
| Potassium |
|
|
39.098 3 (1) |
| 39 K |
38.963 707 4 (12) |
93.258 1 (44) |
|
| 40 K |
39.963 999 2 (12) |
0.011 7 (1) |
|
| 41 K |
40.961 825 4 (12) |
6.730 2 (44) |
|
|
|
|
|
| Manganese |
|
|
54.938 047 1 (16) |
| 55 Mn |
54.938 047 1 (16) |
100 |
|
|
|
|
|
| Iron |
|
|
55.847 (3) |
| 54 Fe |
53.939 612 7 (15) |
5.8 (1) |
|
| 56 Fe |
55.934 939 3 (16) |
91.72 (30) |
|
| 57 Fe |
56.935 395 8 (16) |
2.1 (1) |
|
| 58 Fe |
57.933 277 3 (16) |
0.28 (1) |
|
|
|
|
|
| Copper |
|
|
63.546 (3) |
| 63 Cu |
62.929 598 9 (16) |
69.17 (3) |
|
| 65 Cu |
64.927 792 9 (20) |
30.83 (3) |
|
|
|
|
|
| Zinc |
|
|
65.39 (2) |
| 64 Zn |
63.929 144 8 (19) |
48.6 (3) |
|
| 66 Zn |
65.926 034 7 (17) |
27.9 (2) |
|
| 67 Zn |
66.927 129 1 (17) |
4.1 (1) |
|
| 68 Zn |
67.924 845 9 (18) |
18.8 (4) |
|
| 70 Zn |
69.925 325 (4) |
0.6 (1) |
|
|
|
|
|
| Bromine |
|
|
79.904 (1) |
| 79 Br |
78.918 336 1 (26) |
50.69 (7) |
|
| 81 Br |
80.916 289 (6) |
49.31 (7) |
|
|
|
|
|
| Iodine |
|
|
126.904 473 (5) |
| 127 I |
126.904 473 (5) |
100 |
|
|
|
|
|
References for Complete Listings
1. Holden, N. E., "Table of
the Isotopes", in Lide, D. R. Ed., CRC Handbook of Chemistry and Physics,
74th Ed., CRC Press, Boca Raton FL, 1993.
2. Wapstra, A. H., and Audi, G., Nucl. Phys., A432, 1, 1985.
3. "IUPAC Commission on Atomic
Weights and Isotopic Abundances," Pure Appl. Chem., 63, 991,
1991.
4. "Atomic Weights of the Elements
1987, " Pure Appl. Chem. 60, 841, 1987.
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