O
Оксиген
Z 8 15,999 г/мольІнший неметал
| 16O | 8 | 15,9949 | -4 737,002 | 99,757% | Стабільний | 0+ | --- | 1919 |
| 18O | 10 | 17,9992 | -782,816 | 0,2045% | Стабільний | 0+ | --- | 1929 |
| 17O | 9 | 16,9991 | -808,764 | 0,0384% | Стабільний | 5/2+ | --- | 1925 |
| 11O | 3 | 11,0513 | 47 740,0 | --- | 198,0 йс | (3/2-) | p→9C(100%) | 2019 |
| 12O | 4 | 12,0344 | 32 013,0 | --- | 8,9 зс | 0+ | p→10C(100%) | 1978 |
| 13O | 5 | 13,0248 | 23 115,0 | --- | 8,58 мс | (3/2-) | β⁺→13N(89,1%) β⁺p→12C(10,9%) | 1963 |
| 14O | 6 | 14,0086 | 8 007,781 | --- | 1,18 хв | 0+ | β⁺→14N(100%) | 1949 |
| 15O | 7 | 15,0031 | 2 855,6 | --- | 2,04 хв | 1/2- | β⁺→15N(100%) | 1934 |
| 19O | 11 | 19,0036 | 3 332,9 | --- | 26,47 с | 5/2+ | β⁻→19F(100%) | 1936 |
| 20O | 12 | 20,0041 | 3 796,2 | --- | 13,51 с | 0+ | β⁻→20F(100%) | 1959 |
| 21O | 13 | 21,0087 | 8 062,0 | --- | 3,42 с | (5/2+) | β⁻→21F(100%) β⁻n→20F | 1968 |
| 22O | 14 | 22,01 | 9 280,0 | --- | 2,25 с | 0+ | β⁻→22F(100%) β⁻n→21F(<22%) | 1969 |
| 23O | 15 | 23,0157 | 14 620,0 | --- | 97,0 мс | 1/2+ | β⁻→23F(93%) β⁻n→22F(7%) | 1970 |
| 24O | 16 | 24,0199 | 18 500,0 | --- | 77,4 мс | 0+ | β⁻→24F(57%) β⁻n→23F(43%) | 1970 |
| 25O | 17 | 25,0293 | 27 330,0 | --- | 5,18 зс | (3/2+) | n→24O(100%) | 2008 |
| 26O | 18 | 26,0372 | 34 660,0 | --- | 4,2 пс | 0+ | n→24O(100%) | 2012 |
| 27O | 19 | 27,048 | 44 670,0 | --- | --- | (3/2+) | n→26O n→25O | --- |
| 28O | 20 | 28,0559 | 52 080,0 | --- | --- | 0+ | n→26O | --- |