in choosing which isotopes to search.
| Isotope | Relative Atomic Mass |
Isotopic Composition |
Standard Atomic Weight |
Notes | ||||
|---|---|---|---|---|---|---|---|---|
 | ||||||||
| 1 | H | 1 | 1.007 825 032 1(4) | 99.9885(70) | 1.007 94(7) | g,m,r,c,w | ||
| D | 2 | 2.014 101 778 0(4) | 0.0115(70) | |||||
| T | 3 | 3.016 049 2675(11) | ||||||
| 8 | O | 16 | 15.994 914 6221(15) | 99.757(16) | 15.9994(3) | g,r | ||
| 17 | 16.999 131 50(22) | 0.038(1) | ||||||
| 18 | 17.999 160 4(9) | 0.205(14) | ||||||
| 55 | Cs | 133 | 132.905 447(3) | 100 | 132.905 45(2) | |||
| ||||||||
