Si
Силіцій
Z 14 28,085 г/мольМеталоїд
| 28Si | 14 | 27,9769 | -21 492,797 | 92,2545% | Стабільний | 0+ | --- | 1920 |
| 29Si | 15 | 28,9765 | -21 895,081 | 4,672% | Стабільний | 1/2+ | --- | 1920 |
| 30Si | 16 | 29,9738 | -24 432,962 | 3,0735% | Стабільний | 0+ | --- | 1924 |
| 22Si | 8 | 22,0361 | 33 640,0 | --- | 28,7 мс | 0+ | β⁺p→21Mg(62%) β⁺→22Al(37,3%) β⁺p→20Na(0,7%) | 1987 |
| 23Si | 9 | 23,0257 | 23 950,0 | --- | 42,3 мс | (3/2+) | β⁺p→22Mg(88%) β⁺→23Al(8,4%) β⁺p→21Na(3,6%) | 1986 |
| 24Si | 10 | 24,0115 | 10 745,0 | --- | 143,2 мс | 0+ | β⁺→24Al(65,5%) β⁺p→23Mg(34,5%) | 1979 |
| 25Si | 11 | 25,0041 | 3 827,0 | --- | 220,6 мс | 5/2+ | β⁺→25Al(65%) β⁺p→24Mg(35%) | 1963 |
| 26Si | 12 | 25,9923 | -7 141,0 | --- | 2,25 с | 0+ | β⁺→26Al(100%) | 1960 |
| 27Si | 13 | 26,9867 | -12 384,51 | --- | 4,12 с | 5/2+ | β⁺→27Al(100%) | 1939 |
| 31Si | 17 | 30,9754 | -22 949,04 | --- | 2,62 год | 3/2+ | β⁻→31P(100%) | 1934 |
| 32Si | 18 | 31,9742 | -24 077,69 | --- | 157,0 р | 0+ | β⁻→32P(100%) | 1953 |
| 33Si | 19 | 32,978 | -20 514,3 | --- | 6,18 с | 3/2+ | β⁻→33P(100%) | 1971 |
| 34Si | 20 | 33,9785 | -19 991,7 | --- | 2,77 с | 0+ | β⁻→34P(100%) | 1971 |
| 34mSi | 20 | 33,9831 | -15 735,6 | --- | --- | (3-) | γ→34Si(100%) | 1989 |
| 35Si | 21 | 34,9846 | -14 390,0 | --- | 780,0 мс | (7/2-) | β⁻→35P(100%) β⁻n→34P(<5%) | 1971 |
| 36Si | 22 | 35,9866 | -12 440,0 | --- | 503,0 мс | 0+ | β⁻→36P(88%) β⁻n→35P(12%) | 1971 |
| 37Si | 23 | 36,9929 | -6 570,0 | --- | 141,0 мс | (5/2-) | β⁻→37P(83%) β⁻n→36P(17%) β⁻n→35P | 1979 |
| 38Si | 24 | 37,9955 | -4 170,0 | --- | 63,0 мс | 0+ | β⁻→38P(75%) β⁻n→37P(25%) | 1979 |
| 39Si | 25 | 39,0025 | 2 320,0 | --- | 41,2 мс | (5/2-) | β⁻→39P(67%) β⁻n→38P(33%) β⁻n→37P | 1979 |
| 40Si | 26 | 40,0061 | 5 670,0 | --- | 31,2 мс | 0+ | β⁻→40P(62%) β⁻n→39P(38%) β⁻n→38P | 1989 |
| 41Si | 27 | 41,0142 | 13 200,0 | --- | 20,0 мс | (7/2-) | β⁻→41P(100%) β⁻n→40P(>55%) β⁻n→39P | 1989 |
| 42Si | 28 | 42,0181 | 16 840,0 | --- | 12,5 мс | 0+ | β⁻→42P(100%) β⁻n→41P β⁻n→40P | 1990 |
| 43Si | 29 | 43,0261 | 24 330,0 | --- | 30,0 мс | (3/2-) | β⁻→43P β⁻n→42P β⁻n→41P | 2002 |
| 44Si | 30 | 44,0315 | 29 310,0 | --- | 4,0 мс | 0+ | β⁻→44P β⁻n→43P β⁻n→42P | 2007 |
| 45Si | 31 | 45,0398 | 37 090,0 | --- | 4,0 мс | (3/2-) | β⁻→45P β⁻n→44P β⁻n→43P | --- |