in choosing which isotopes to search.
| Isotope | Relative Atomic Mass |
Isotopic Composition |
Standard Atomic Weight |
Notes | ||||
|---|---|---|---|---|---|---|---|---|
 | ||||||||
| 8 | O | 16 | 15.994 914 619 56(16) | 0.997 57(16) | 15.9994(3) | g,r,e,w | ||
| 17 | 16.999 131 70(12) | 0.000 38(1) | ||||||
| 18 | 17.999 161 0(7) | 0.002 05(14) | ||||||
| 26 | Fe | 54 | 53.939 610 5(7) | 0.058 45(35) | 55.845(2) | |||
| 56 | 55.934 937 5(7) | 0.917 54(36) | ||||||
| 57 | 56.935 394 0(7) | 0.021 19(10) | ||||||
| 58 | 57.933 275 6(8) | 0.002 82(4) | ||||||
| ||||||||
