Cr
Chromium
Z 24 51.996 g/molTransition Metal
| 52Cr | 28 | 51.9405 | -55,419.51 | 83.789% | Stable | 0+ | --- | 1923 |
| 53Cr | 29 | 52.9406 | -55,287.62 | 9.501% | Stable | 3/2- | --- | 1930 |
| 50Cr | 26 | 49.946 | -50,261.36 | 4.345% | Stable | 0+ | β⁺ | 1930 |
| 54Cr | 30 | 53.9389 | -56,935.38 | 2.365% | Stable | 0+ | --- | 1930 |
| 41Cr | 17 | 41.0219 | 20,410.0 | --- | --- | (3/2+) | p→40V | --- |
| 42Cr | 18 | 42.0076 | 7,060.0 | --- | 13.3 ms | 0+ | β⁺p→41Ti(94.4%) β⁺→42V(5.6%) p→40Ti | 1996 |
| 43Cr | 19 | 42.9979 | -1,970.0 | --- | 21.1 ms | (3/2+) | β⁺p→42Ti(79.3%) β⁺p→41Sc(11.6%) β⁺→43V(8.97%) β⁺p(0.13%) β⁺α→39Sc | 1992 |
| 44Cr | 20 | 43.9856 | -13,420.0 | --- | 42.8 ms | 0+ | β⁺→44V(88%) β⁺p→43Ti(12%) | 1987 |
| 45Cr | 21 | 44.9791 | -19,510.0 | --- | 60.9 ms | (7/2-) | β⁺→45V(65.6%) β⁺p→44Ti(34.4%) | 1974 |
| 45mCr | 21 | 44.9792 | -19,400.0 | --- | --- | (3/2) | γ→45Cr(100%) | 2011 |
| 46Cr | 22 | 45.9684 | -29,472.0 | --- | 224.3 ms | 0+ | β⁺→46V(100%) | 1972 |
| 47Cr | 23 | 46.9629 | -34,563.0 | --- | 461.6 ms | 3/2- | β⁺→47V(100%) | 1972 |
| 48Cr | 24 | 47.954 | -42,821.0 | --- | 21.56 h | 0+ | β⁺→48V(100%) | 1952 |
| 49Cr | 25 | 48.9513 | -45,332.4 | --- | 42.3 m | 5/2- | β⁺→49V(100%) | 1942 |
| 51Cr | 27 | 50.9448 | -51,450.71 | --- | 27.7 d | 7/2- | EC→51V(100%) | 1940 |
| 55Cr | 31 | 54.9408 | -55,110.32 | --- | 3.5 m | 3/2- | β⁻→55Mn(100%) | 1952 |
| 56Cr | 32 | 55.9406 | -55,285.1 | --- | 5.94 m | 0+ | β⁻→56Mn(100%) | 1960 |
| 57Cr | 33 | 56.9436 | -52,525.0 | --- | 21.1 s | (3/2-) | β⁻→57Mn(100%) | 1978 |
| 58Cr | 34 | 57.9442 | -51,991.8 | --- | 7.0 s | 0+ | β⁻→58Mn(100%) | 1980 |
| 59Cr | 35 | 58.9483 | -48,115.9 | --- | 1.05 s | (1/2-) | β⁻→59Mn(100%) | 1980 |
| 59mCr | 35 | 58.9489 | -47,613.2 | --- | 96.0 µs | (9/2+) | γ→59Cr(100%) | 1998 |
| 60Cr | 36 | 59.9496 | -46,908.5 | --- | 490.0 ms | 0+ | β⁻→60Mn(100%) β⁻n→59Mn | 1980 |
| 61Cr | 37 | 60.9544 | -42,496.5 | --- | 243.0 ms | (5/2-) | β⁻→61Mn(100%) β⁻n→60Mn | 1985 |
| 62Cr | 38 | 61.9561 | -40,853.0 | --- | 206.0 ms | 0+ | β⁻→62Mn(100%) β⁻n→61Mn | 1985 |
| 63Cr | 39 | 62.9612 | -36,180.0 | --- | 129.0 ms | (1/2-) | β⁻→63Mn(100%) β⁻n→62Mn | 1992 |
| 64Cr | 40 | 63.9639 | -33,640.0 | --- | 43.0 ms | 0+ | β⁻→64Mn(100%) β⁻n→63Mn | 1992 |
| 65Cr | 41 | 64.9696 | -28,310.0 | --- | 27.5 ms | (1/2-) | β⁻→65Mn(100%) β⁻n→64Mn β⁻n→63Mn | 1997 |
| 66Cr | 42 | 65.973 | -25,140.0 | --- | 23.8 ms | 0+ | β⁻→66Mn(100%) β⁻n→65Mn β⁻n→64Mn | 1997 |
| 67Cr | 43 | 66.9793 | -19,270.0 | --- | 11.0 ms | (1/2-) | β⁻→67Mn β⁻n→66Mn β⁻n→65Mn | 1997 |
| 68Cr | 44 | 67.9832 | -15,690.0 | --- | 10.0 ms | 0+ | β⁻→68Mn β⁻n→67Mn β⁻n→66Mn | 2009 |
| 69Cr | 45 | 68.9897 | -9,630.0 | --- | 6.0 ms | (7/2+) | β⁻→69Mn β⁻n→68Mn β⁻n→67Mn | 2013 |
| 70Cr | 46 | 69.9939 | -5,640.0 | --- | 6.0 ms | 0+ | β⁻→70Mn β⁻n→69Mn β⁻n→68Mn | 2013 |