Co
Cobalt
Z 27 58.933 g/molTransition Metal
| 59Co | 32 | 58.9332 | -62,229.8 | 100.0% | Stable | 7/2- | --- | 1923 |
| 47Co | 20 | 47.0114 | 10,620.0 | --- | --- | (7/2-) | p→46Fe | --- |
| 48Co | 21 | 48.0019 | 1,730.0 | --- | --- | (6+) | p→47Fe | --- |
| 49Co | 22 | 48.9895 | -9,780.0 | --- | --- | (7/2-) | p→48Fe | --- |
| 50Co | 23 | 49.9811 | -17,590.0 | --- | 38.8 ms | (6+) | β⁺p→49Mn(70.5%) β⁺→50Fe(29.5%) β⁺p→48Cr | 1987 |
| 51Co | 24 | 50.9706 | -27,340.0 | --- | 68.8 ms | 7/2- | β⁺→51Fe(100%) β⁺p→50Mn(<3.8%) | 1987 |
| 52Co | 25 | 51.9631 | -34,344.0 | --- | 111.7 ms | 6+ | β⁺→52Fe(100%) β⁺p→51Mn | 1987 |
| 52mCo | 25 | 51.9635 | -33,968.0 | --- | 102.0 ms | 2+ | β⁺→52Fe(100%) γ→52Co β⁺p→51Mn | 2016 |
| 53Co | 26 | 52.9542 | -42,659.4 | --- | 244.6 ms | (7/2-) | β⁺→53Fe(100%) | 1970 |
| 53mCo | 26 | 52.9576 | -39,485.1 | --- | 250.0 ms | (19/2-) | p→52Fe(1.5%) β⁺→53Fe | 1970 |
| 54Co | 27 | 53.9485 | -48,010.1 | --- | 193.27 ms | 0+ | β⁺→54Fe(100%) | 1952 |
| 54mCo | 27 | 53.9487 | -47,812.5 | --- | 1.48 m | 7+ | β⁺→54Fe(100%) | 1962 |
| 55Co | 28 | 54.942 | -54,030.0 | --- | 17.53 h | 7/2- | β⁺→55Fe(100%) | 1938 |
| 56Co | 29 | 55.9398 | -56,040.5 | --- | 77.24 d | 4+ | β⁺→56Fe(100%) | 1941 |
| 57Co | 30 | 56.9363 | -59,345.7 | --- | 271.81 d | 7/2- | EC→57Fe(100%) | 1941 |
| 58Co | 31 | 57.9358 | -59,847.3 | --- | 70.84 d | 2+ | β⁺→58Fe(100%) EC→58Fe(85.21%) β⁺(14.79%) | 1941 |
| 58mCo | 31 | 57.9358 | -59,822.4 | --- | 8.85 h | 5+ | γ→58Co(99.999%) EC→58Fe(0.001%) | 1950 |
| 58nCo | 31 | 57.9358 | -59,794.2 | --- | 10.5 µs | 4+ | γ→58Co(100%) | 1964 |
| 60Co | 33 | 59.9338 | -61,650.4 | --- | 5.27 y | 5+ | β⁻→60Ni(100%) | 1941 |
| 60mCo | 33 | 59.9339 | -61,591.8 | --- | 10.47 m | 2+ | γ→60Co(~100%) β⁻→60Ni(0.25%) | 1963 |
| 61Co | 34 | 60.9325 | -62,898.2 | --- | 1.65 h | 7/2- | β⁻→61Ni(100%) | 1947 |
| 62Co | 35 | 61.9341 | -61,424.0 | --- | 1.54 m | (2+) | β⁻→62Ni(100%) | 1949 |
| 62mCo | 35 | 61.9341 | -61,402.0 | --- | 13.86 m | (5+) | β⁻→62Ni(~100%) γ→62Co(<0.5%) | 1957 |
| 63Co | 36 | 62.9336 | -61,852.0 | --- | 26.9 s | 7/2- | β⁻→63Ni(100%) | 1960 |
| 64Co | 37 | 63.9358 | -59,792.0 | --- | 300.0 ms | 1+ | β⁻→64Ni(100%) | 1969 |
| 64mCo | 37 | 63.9359 | -59,686.0 | --- | 300.0 ms | (5+) | β⁻→64Ni γ→64Co | 2008 |
| 65Co | 38 | 64.9365 | -59,185.2 | --- | 1.16 s | (7/2-) | β⁻→65Ni(100%) | 1978 |
| 66Co | 39 | 65.9394 | -56,409.0 | --- | 194.0 ms | (1+) | β⁻→66Ni(100%) β⁻n→65Ni | 1985 |
| 66mCo | 39 | 65.9396 | -56,234.0 | --- | 824.0 ns | (3+) | γ→66Co(100%) | 1998 |
| 66nCo | 39 | 65.9401 | -55,767.0 | --- | --- | (8-) | γ→66Co(100%) | 1998 |
| 67Co | 40 | 66.9406 | -55,322.0 | --- | 329.0 ms | (7/2-) | β⁻→67Ni(100%) β⁻n→66Ni | 1985 |
| 67mCo | 40 | 66.9411 | -54,830.0 | --- | 496.0 ms | (1/2-) | γ→67Co(>80%) β⁻→67Ni | 2008 |
| 68Co | 41 | 67.9446 | -51,643.0 | --- | 200.0 ms | (7-) | β⁻→68Ni(100%) β⁻n→67Ni | 1985 |
| 68mCo | 41 | 67.9447 | -51,490.0 | --- | 1.6 s | (2-) | β⁻→68Ni(100%) β⁻n→67Ni(>2.6%) | 1998 |
| 68nCo | 41 | 67.9448 | -51,450.0 | --- | 101.0 ns | (1) | γ→68Co(100%) | 2010 |
| 69Co | 42 | 68.9459 | -50,390.0 | --- | 180.0 ms | (7/2-) | β⁻→69Ni(100%) β⁻n→68Ni | 1985 |
| 69mCo | 42 | 68.9461 | -50,213.0 | --- | 750.0 ms | (1/2-) | β⁻→69Ni(100%) | 2015 |
| 70Co | 43 | 69.9501 | -46,525.0 | --- | 508.0 ms | (1+) | β⁻→70Ni(100%) β⁻n→69Ni β⁻n→68Ni | 1998 |
| 70mCo | 43 | 69.9503 | -46,330.0 | --- | 112.0 ms | (7-) | β⁻→70Ni(100%) γ→70Co β⁻n→69Ni β⁻n→68Ni | 1985 |
| 71Co | 44 | 70.9524 | -44,370.0 | --- | 80.0 ms | (7/2-) | β⁻→71Ni(97%) β⁻n→70Ni(3%) | 1992 |
| 72Co | 45 | 71.9567 | -40,300.0 | --- | 51.5 ms | (6-) | β⁻→72Ni(100%) β⁻n→71Ni(>4%) β⁻n→70Ni | 1992 |
| 72mCo | 45 | 71.957 | -40,100.0 | --- | 47.8 ms | (0+) | β⁻→72Ni(100%) | 2016 |
| 73Co | 46 | 72.9592 | -37,970.0 | --- | 42.0 ms | (7/2-) | β⁻→73Ni(94%) β⁻n→72Ni(6%) β⁻n→71Ni | 1995 |
| 74Co | 47 | 73.964 | -33,540.0 | --- | 31.3 ms | (7-) | β⁻→74Ni(82%) β⁻n→73Ni(18%) β⁻n→72Ni | 1995 |
| 75Co | 48 | 74.9672 | -30,560.0 | --- | 26.5 ms | (7/2-) | β⁻→75Ni(100%) β⁻n→74Ni(<16%) β⁻n→73Ni | 1995 |
| 76Co | 49 | 75.9725 | -25,660.0 | --- | 23.0 ms | (8-) | β⁻→76Ni(100%) β⁻n→75Ni β⁻n→74Ni | 2010 |
| 76mCo | 49 | 75.9726 | -25,560.0 | --- | 16.0 ms | (1-) | β⁻→76Ni(100%) | 2015 |
| 76nCo | 49 | 75.9732 | -24,920.0 | --- | 2.99 µs | (3+) | γ→76Co(100%) | 2015 |
| 77Co | 50 | 76.9765 | -21,910.0 | --- | 15.0 ms | (7/2-) | β⁻→77Ni(100%) β⁻n→76Ni β⁻n→75Ni β⁻n→74Ni | 2014 |
| 78Co | 51 | 77.9836 | -15,320.0 | --- | 11.0 ms | --- | β⁻→78Ni | 2017 |