Os
Osmium
Z 76 190.23 g/molTransition Metal
| 192Os | 116 | 191.9615 | -35,882.3 | 40.78% | Stable | 0+ | β⁻ α→188W | 1931 |
| 190Os | 114 | 189.9584 | -38,707.8 | 26.26% | Stable | 0+ | α→186W | 1931 |
| 189Os | 113 | 188.9581 | -38,986.8 | 16.15% | Stable | 3/2- | α→185W | 1931 |
| 188Os | 112 | 187.9558 | -41,137.3 | 13.24% | Stable | 0+ | α→184W | 1931 |
| 187Os | 111 | 186.9557 | -41,219.0 | 1.96% | Stable | 1/2- | α→183W | 1931 |
| 186Os | 110 | 185.9538 | -43,000.0 | 1.59% | 2.0 Py | 0+ | α→182W(100%) | 1931 |
| 184Os | 108 | 183.9525 | -44,252.6 | 0.02% | 11.2 Ty | 0+ | α→180W β⁺ | 1937 |
| 161Os | 85 | 160.989 | -10,200.0 | --- | 640.0 µs | (7/2-) | α→157W(100%) | 2010 |
| 162Os | 86 | 161.9844 | -14,500.0 | --- | 2.1 ms | 0+ | α→158W(100%) | 1989 |
| 163Os | 87 | 162.9825 | -16,340.0 | --- | 5.7 ms | 7/2- | α→159W(100%) β⁺→163Re | 1981 |
| 164Os | 88 | 163.9781 | -20,420.0 | --- | 21.0 ms | 0+ | α→160W(96%) β⁺→164Re | 1981 |
| 165Os | 89 | 164.9767 | -21,750.0 | --- | 71.0 ms | (7/2-) | α→161W(90%) β⁺→165Re(10%) | 1978 |
| 166Os | 90 | 165.9727 | -25,432.0 | --- | 213.0 ms | 0+ | α→162W(83%) β⁺→166Re(17%) | 1977 |
| 167Os | 91 | 166.9716 | -26,500.0 | --- | 839.0 ms | 7/2- | α→163W(51%) β⁺→167Re | 1977 |
| 167mOs | 91 | 166.972 | -26,070.0 | --- | 672.0 ns | 13/2+ | γ→167Os(100%) | 2009 |
| 168Os | 92 | 167.9678 | -29,995.0 | --- | 2.1 s | 0+ | β⁺→168Re(57%) α→164W(43%) | 1977 |
| 169Os | 93 | 168.967 | -30,723.0 | --- | 3.46 s | (5/2-) | β⁺→169Re(86.3%) α→165W(13.7%) | 1972 |
| 170Os | 94 | 169.9636 | -33,926.0 | --- | 7.37 s | 0+ | β⁺→170Re(90.5%) α→166W(9.5%) | 1972 |
| 171Os | 95 | 170.9632 | -34,297.0 | --- | 8.3 s | (5/2-) | α→167W(1.8%) β⁺→171Re | 1972 |
| 172Os | 96 | 171.96 | -37,244.0 | --- | 19.2 s | 0+ | β⁺→172Re(98.81%) α→168W(1.19%) | 1971 |
| 173Os | 97 | 172.9598 | -37,438.0 | --- | 22.4 s | 5/2- | β⁺→173Re(99.6%) α→169W(0.4%) | 1971 |
| 174Os | 98 | 173.9571 | -39,995.0 | --- | 44.0 s | 0+ | β⁺→174Re(~100%) α→170W(0.024%) | 1971 |
| 175Os | 99 | 174.9569 | -40,105.0 | --- | 1.4 m | (5/2-) | β⁺→175Re(100%) | 1972 |
| 176Os | 100 | 175.9548 | -42,131.0 | --- | 3.6 m | 0+ | β⁺→176Re(100%) | 1970 |
| 177Os | 101 | 176.955 | -41,956.0 | --- | 3.0 m | 1/2- | β⁺→177Re(100%) | 1970 |
| 178Os | 102 | 177.9533 | -43,544.0 | --- | 5.0 m | 0+ | β⁺→178Re(100%) | 1967 |
| 179Os | 103 | 178.9538 | -43,020.0 | --- | 6.5 m | 1/2- | β⁺→179Re(100%) | 1968 |
| 179mOs | 103 | 178.954 | -42,875.0 | --- | 500.0 ns | (7/2-) | γ→179Os(100%) | 1983 |
| 179nOs | 103 | 178.9541 | -42,777.0 | --- | 783.0 ns | (9/2+) | γ→179Os(100%) | 1983 |
| 180Os | 104 | 179.9524 | -44,356.0 | --- | 21.5 m | 0+ | β⁺→180Re(100%) | 1967 |
| 181Os | 105 | 180.9532 | -43,550.0 | --- | 1.75 h | 1/2- | β⁺→181Re(100%) | 1966 |
| 181mOs | 105 | 180.9533 | -43,501.0 | --- | 2.7 m | 7/2- | β⁺→181Re(100%) | 1966 |
| 181nOs | 105 | 180.9534 | -43,393.0 | --- | 262.0 ns | 9/2+ | γ→181Os(100%) | 1974 |
| 182Os | 106 | 181.9521 | -44,609.0 | --- | 21.84 h | 0+ | EC→182Re(100%) | 1950 |
| 182mOs | 106 | 181.9541 | -42,778.0 | --- | 780.0 µs | 8- | γ→182Os(100%) | 1966 |
| 182nOs | 106 | 181.9597 | -37,560.0 | --- | 150.0 ns | 25+ | γ→182Os(100%) | 1988 |
| 183Os | 107 | 182.9531 | -43,660.0 | --- | 13.0 h | 9/2+ | β⁺→183Re(100%) | 1950 |
| 183mOs | 107 | 182.9533 | -43,490.0 | --- | 9.9 h | 1/2- | β⁺→183Re(85%) γ→183Os(15%) | 1958 |
| 185Os | 109 | 184.954 | -42,805.9 | --- | 92.95 d | 1/2- | EC→185Re(100%) | 1947 |
| 185mOs | 109 | 184.9542 | -42,703.5 | --- | 3.0 µs | 7/2- | γ→185Os(100%) | 1970 |
| 185nOs | 109 | 184.9543 | -42,530.4 | --- | 780.0 ns | 11/2+ | γ→185Os(100%) | 1970 |
| 187mOs | 111 | 186.9559 | -41,118.6 | --- | 112.0 ns | 7/2- | γ→187Os(100%) | 1964 |
| 187nOs | 111 | 186.956 | -40,961.9 | --- | 231.0 µs | 11/2+ | γ→187Os(100%) | 1964 |
| 189mOs | 113 | 188.9582 | -38,956.0 | --- | 5.81 h | 9/2- | γ→189Os(100%) β⁻→189Ir | 1960 |
| 190mOs | 114 | 189.9603 | -37,002.1 | --- | 9.86 m | 10- | γ→190Os(100%) | 1950 |
| 191Os | 115 | 190.9609 | -36,395.2 | --- | 14.99 d | 9/2- | β⁻→191Ir(100%) | 1940 |
| 191mOs | 115 | 190.961 | -36,320.8 | --- | 13.1 h | 3/2- | γ→191Os(100%) | 1952 |
| 192mOs | 116 | 191.9636 | -33,866.9 | --- | 5.94 s | 10- | γ→192Os(100%) β⁻→192Ir | 1965 |
| 192nOs | 116 | 191.9664 | -31,302.0 | --- | 205.0 ns | (20+) | γ→192Os(100%) | 2004 |
| 193Os | 117 | 192.9641 | -33,394.4 | --- | 1.24 d | 3/2- | β⁻→193Ir(100%) | 1940 |
| 193mOs | 117 | 192.9645 | -33,078.8 | --- | 121.0 ns | (9/2-) | γ→193Os(100%) | 2011 |
| 194Os | 118 | 193.9652 | -32,435.2 | --- | 6.0 y | 0+ | β⁻→194Ir(100%) | 1951 |
| 195Os | 119 | 194.9683 | -29,510.0 | --- | 6.5 m | (3/2-) | β⁻→195Ir(100%) | 2004 |
| 195mOs | 119 | 194.9688 | -29,080.0 | --- | 47.0 s | (13/2+) | γ→195Os(100%) β⁻→195Ir | 2012 |
| 196Os | 120 | 195.9696 | -28,280.0 | --- | 34.9 m | 0+ | β⁻→196Ir(100%) | 1977 |
| 197Os | 121 | 196.9731 | -25,080.0 | --- | 1.55 m | (5/2-) | β⁻→197Ir(100%) | 2003 |
| 197mOs | 121 | 196.9736 | -24,580.0 | --- | --- | (13/2+) | γ→197Os β⁻→197Ir | --- |
| 198Os | 122 | 197.9747 | -23,600.0 | --- | 2.08 m | 0+ | β⁻→198Ir(100%) | 2008 |
| 199Os | 123 | 198.9782 | -20,270.0 | --- | 6.0 s | (5/2-) | β⁻→199Ir(100%) | 2008 |
| 200Os | 124 | 199.9801 | -18,550.0 | --- | 7.0 s | 0+ | β⁻→200Ir(100%) | 2005 |
| 201Os | 125 | 200.9841 | -14,840.0 | --- | 3.0 s | (1/2-) | β⁻→201Ir | 2009 |
| 202Os | 126 | 201.9865 | -12,530.0 | --- | 2.0 s | 0+ | β⁻→202Ir | 2009 |
| 203Os | 127 | 202.9922 | -7,270.0 | --- | 300.0 ms | (9/2+) | β⁻→203Ir β⁻n→202Ir | 2012 |