Li
Літій
Z 3 6,94 г/мольЛужний метал
| 7Li | 4 | 7,016 | 14 907,105 | 95,15% | Стабільний | 3/2- | --- | 1921 |
| 6Li | 3 | 6,0151 | 14 086,88 | 4,85% | Стабільний | 1+ | --- | 1921 |
| 3Li | 0 | 3,0308 | 28 670,0 | --- | --- | (3/2-) | p→2He | --- |
| 4Li | 1 | 4,0272 | 25 320,0 | --- | 91,0 йс | 2- | p→3He(100%) | 1965 |
| 5Li | 2 | 5,0125 | 11 680,0 | --- | 370,0 йс | 3/2- | p→4He(100%) | 1941 |
| 8Li | 5 | 8,0225 | 20 945,8 | --- | 838,7 мс | 2+ | β⁻α→4He(100%) | 1935 |
| 9Li | 6 | 9,0268 | 24 954,91 | --- | 178,2 мс | 3/2- | β⁻n→8Be(50,5%) β⁻→9Be(49,5%) | 1951 |
| 10Li | 7 | 10,0355 | 33 053,0 | --- | 2,0 зс | (1-) | n→9Li(100%) | 1975 |
| 10mLi | 7 | 10,0357 | 33 250,0 | --- | 3,7 зс | 1+ | γ→10Li(100%) | 1994 |
| 10nLi | 7 | 10,036 | 33 530,0 | --- | 1,35 зс | (2+) | γ→10Li(100%) | 1993 |
| 11Li | 8 | 11,0437 | 40 728,3 | --- | 8,75 мс | 3/2- | β⁻n→10Be(86,3%) β⁻→11Be(5,978%) β⁻n→9Be(4,1%) β⁻n→8Be(1,9%) β⁻α→7He(1,7%) β⁻→9Li(0,013%) β⁻→8Li(0,009%) | 1966 |
| 12Li | 9 | 12,0526 | 49 010,0 | --- | --- | (1-) | n→11Li | 2008 |
| 13Li | 10 | 13,0612 | 56 980,0 | --- | 3,3 зс | (3/2-) | n→11Li(100%) | 2008 |