in choosing which isotopes to search.
| Isotope | Relative Atomic Mass |
Isotopic Composition |
Standard Atomic Weight |
Notes | ||||
|---|---|---|---|---|---|---|---|---|
 | ||||||||
| 9 | F | 19 | 18.998 403 22(7) | 1.0000 | 18.998 403 2(5) | |||
| 20 | Ca | 40 | 39.962 590 98(22) | 0.969 41(156) | 40.078(4) | g,f | ||
| 42 | 41.958 618 01(27) | 0.006 47(23) | ||||||
| 43 | 42.958 766 6(3) | 0.001 35(10) | ||||||
| 44 | 43.955 481 8(4) | 0.020 86(110) | ||||||
| 46 | 45.953 6926(24) | 0.000 04(3) | ||||||
| 48 | 47.952 534(4) | 0.001 87(21) | ||||||
| ||||||||
