in choosing which isotopes to search.
| Isotope | Relative Atomic Mass |
Isotopic Composition |
Standard Atomic Weight |
Notes | ||||
|---|---|---|---|---|---|---|---|---|
 | ||||||||
| 1 | H | 1 | 1.007 825 032 23(9) | 0.999 885(70) | [1.007 84, 1.008 11] | m | ||
| D | 2 | 2.014 101 778 12(12) | 0.000 115(70) | |||||
| T | 3 | 3.016 049 2779(24) | ||||||
| 9 | F | 19 | 18.998 403 162 73(92) | 1 | 18.998 403 163(6) | |||
| 18 | Ar | 36 | 35.967 545 105(28) | 0.003 336(21) | 39.948(1) | g,r | ||
| 38 | 37.962 732 11(21) | 0.000 629(7) | ||||||
| 40 | 39.962 383 1237(24) | 0.996 035(25) | ||||||
| ||||||||
