in choosing which isotopes to search.
| Isotope | Relative Atomic Mass |
Isotopic Composition |
Standard Atomic Weight |
Notes | ||||
|---|---|---|---|---|---|---|---|---|
 | ||||||||
| 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) | ||||||
| 56 | Ba | 130 | 129.906 310(7) | 0.106(1) | 137.327(7) | |||
| 132 | 131.905 056(3) | 0.101(1) | ||||||
| 134 | 133.904 503(3) | 2.417(18) | ||||||
| 135 | 134.905 683(3) | 6.592(12) | ||||||
| 136 | 135.904 570(3) | 7.854(24) | ||||||
| 137 | 136.905 821(3) | 11.232(24) | ||||||
| 138 | 137.905 241(3) | 71.698(42) | ||||||
| ||||||||
