C
Карбон
Z 6 12,011 г/мольІнший неметал
| 12C | 6 | 12,0 | 0,0 | 98,94% | Стабільний | 0+ | --- | 1919 |
| 13C | 7 | 13,0034 | 3 125,009 | 1,06% | Стабільний | 1/2- | --- | 1929 |
| 8C | 2 | 8,0376 | 35 064,0 | --- | 3,5 зс | 0+ | p→6Be(100%) | 1974 |
| 9C | 3 | 9,031 | 28 911,0 | --- | 126,5 мс | 3/2- | β⁺→9B(54,1%) β⁺α→5Li(38,4%) β⁺p→8Be(7,5%) | 1964 |
| 10C | 4 | 10,0169 | 15 698,67 | --- | 19,3 с | 0+ | β⁺→10B(100%) | 1949 |
| 11C | 5 | 11,0114 | 10 649,4 | --- | 20,34 хв | 3/2- | β⁺→11B(100%) | 1934 |
| 14C | 8 | 14,0032 | 3 019,893 | --- | 5,7 кр | 0+ | β⁻→14N(100%) | 1936 |
| 15C | 9 | 15,0106 | 9 873,1 | --- | 2,45 с | 1/2+ | β⁻→15N(100%) | 1950 |
| 16C | 10 | 16,0147 | 13 694,0 | --- | 750,0 мс | 0+ | β⁻n→15N(99%) β⁻→16N(1%) | 1961 |
| 17C | 11 | 17,0226 | 21 032,0 | --- | 193,0 мс | 3/2+ | β⁻→17N(71,6%) β⁻n→16N(28,4%) β⁻n→15N | 1968 |
| 18C | 12 | 18,0268 | 24 920,0 | --- | 92,0 мс | 0+ | β⁻→18N(68,5%) β⁻n→17N(31,5%) β⁻n→16N | 1969 |
| 19C | 13 | 19,0348 | 32 410,0 | --- | 46,2 мс | 1/2+ | β⁻n→18N(47%) β⁻→19N(46%) β⁻n→17N(7%) | 1974 |
| 20C | 14 | 20,0403 | 37 500,0 | --- | 16,0 мс | 0+ | β⁻n→19N(70%) β⁻→20N(30%) β⁻n→18N(<18,6%) | 1981 |
| 21C | 15 | 21,049 | 45 640,0 | --- | --- | (1/2+) | n→20C | --- |
| 22C | 16 | 22,0576 | 53 610,0 | --- | 6,2 мс | 0+ | β⁻n→21N(61%) β⁻→22N(39%) β⁻n→20N(<37%) | 1986 |
| 23C | 17 | 23,0689 | 64 170,0 | --- | --- | (3/2+) | n→22C | --- |