in choosing which isotopes to search.
| Isotope | Relative Atomic Mass |
Isotopic Composition |
Standard Atomic Weight |
Notes | ||||
|---|---|---|---|---|---|---|---|---|
 | ||||||||
| 1 | H | 1 | 1.007 825 032 07(10) | 0.999 885(70) | 1.007 94(7) | g,m,r,b,w | ||
| D | 2 | 2.014 101 777 8(4) | 0.000 115(70) | |||||
| T | 3 | 3.016 049 2777(25) | ||||||
| 17 | Cl | 35 | 34.968 852 68(4) | 0.7576(10) | 35.453(2) | m | ||
| 37 | 36.965 902 59(5) | 0.2424(10) | ||||||
| 18 | Ar | 36 | 35.967 545 106(29) | 0.003 365(30) | 39.948(1) | g,r,a | ||
| 38 | 37.962 732 4(4) | 0.000 632(5) | ||||||
| 40 | 39.962 383 1225(29) | 0.996 003(30) | ||||||
| ||||||||
