オスミウムの同位体
一覧

| 同位体核種 | Z(p)> 励起エネルギー | N(n)> 励起エネルギー | 同位体質量 (u)> 励起エネルギー | 半減期 | 核スピン数 | 天然存在比 | 天然存在比 (範囲) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 162Os | 76 | 86 | 161.98443(54)# | 1.87(18) ms | 0+ |  |  |
| 163Os | 76 | 87 | 162.98269(43)# | 5.5(6) ms | 7/2-# |  |  |
| 164Os | 76 | 88 | 163.97804(22) | 21(1) ms | 0+ |  |  |
| 165Os | 76 | 89 | 164.97676(22)# | 71(3) ms | (7/2-) |  |  |
| 166Os | 76 | 90 | 165.972691(20) | 216(9) ms | 0+ |  |  |
| 167Os | 76 | 91 | 166.97155(8) | 810(60) ms | 3/2-# |  |  |
| 168Os | 76 | 92 | 167.967804(13) | 2.06(6) s | 0+ |  |  |
| 169Os | 76 | 93 | 168.967019(27) | 3.40(9) s | 3/2-# |  |  |
| 170Os | 76 | 94 | 169.963577(12) | 7.46(23) s | 0+ |  |  |
| 171Os | 76 | 95 | 170.963185(20) | 8.3(2) s | (5/2-) |  |  |
| 172Os | 76 | 96 | 171.960023(16) | 19.2(5) s | 0+ |  |  |
| 173Os | 76 | 97 | 172.959808(16) | 22.4(9) s | (5/2-) |  |  |
| 174Os | 76 | 98 | 173.957062(12) | 44(4) s | 0+ |  |  |
| 175Os | 76 | 99 | 174.956946(15) | 1.4(1) min | (5/2-) |  |  |
| 176Os | 76 | 100 | 175.95481(3) | 3.6(5) min | 0+ |  |  |
| 177Os | 76 | 101 | 176.954965(17) | 3.0(2) min | 1/2- |  |  |
| 178Os | 76 | 102 | 177.953251(18) | 5.0(4) min | 0+ |  |  |
| 179Os | 76 | 103 | 178.953816(19) | 6.5(3) min | (1/2-) |  |  |
| 180Os | 76 | 104 | 179.952379(22) | 21.5(4) min | 0+ |  |  |
| 181Os | 76 | 105 | 180.95324(3) | 105(3) min | 1/2- |  |  |
| 181m1Os | 48.9(2) keV | 48.9(2) keV | 48.9(2) keV | 2.7(1) min | (7/2)- |  |  |
| 181m2Os | 156.5(7) keV | 156.5(7) keV | 156.5(7) keV | 316(18) ns | (9/2)+ |  |  |
| 182Os | 76 | 106 | 181.952110(23) | 22.10(25) h | 0+ |  |  |
| 183Os | 76 | 107 | 182.95313(5) | 13.0(5) h | 9/2+ |  |  |
| 183mOs | 170.71(5) keV | 170.71(5) keV | 170.71(5) keV | 9.9(3) h | 1/2- |  |  |
| 184Os | 76 | 108 | 183.9524891(14) | STABLE [>56E+12 a] | 0+ | 0.0002(1) |  |
| 185Os | 76 | 109 | 184.9540423(14) | 93.6(5) d | 1/2- |  |  |
| 185m1Os | 102.3(7) keV | 102.3(7) keV | 102.3(7) keV | 3.0(4) µs | (7/2-)# |  |  |
| 185m2Os | 275.7(8) keV | 275.7(8) keV | 275.7(8) keV | 0.78(5) µs | (11/2+) |  |  |
| 186Os | 76 | 110 | 185.9538382(15) | 2.0(11)E+15 a | 0+ | 0.0159(3) |  |
| 187Os | 76 | 111 | 186.9557505(15) | STABLE | 1/2- | 0.0196(2) |  |
| 188Os | 76 | 112 | 187.9558382(15) | STABLE | 0+ | 0.1324(8) |  |
| 189Os | 76 | 113 | 188.9581475(16) | STABLE | 3/2- | 0.1615(5) |  |
| 189mOs | 30.812(15) keV | 30.812(15) keV | 30.812(15) keV | 5.81(6) h | 9/2- |  |  |
| 190Os | 76 | 114 | 189.9584470(16) | STABLE | 0+ | 0.2626(2) |  |
| 190mOs | 1705.4(2) keV | 1705.4(2) keV | 1705.4(2) keV | 9.9(1) min | (10)- |  |  |
| 191Os | 76 | 115 | 190.9609297(16) | 15.4(1) d | 9/2- |  |  |
| 191mOs | 74.382(3) keV | 74.382(3) keV | 74.382(3) keV | 13.10(5) h | 3/2- |  |  |
| 192Os | 76 | 116 | 191.9614807(27) | STABLE [>9.8E+12 a] | 0+ | 0.4078(19) |  |
| 192mOs | 2015.40(11) keV | 2015.40(11) keV | 2015.40(11) keV | 5.9(1) s | (10-) |  |  |
| 193Os | 76 | 117 | 192.9641516(27) | 30.11(1) h | 3/2- |  |  |
| 194Os | 76 | 118 | 193.9651821(28) | 6.0(2) a | 0+ |  |  |
| 195Os | 76 | 119 | 194.96813(54) | 6.5 min | 3/2-# |  |  |
| 196Os | 76 | 120 | 195.96964(4) | 34.9(2) min | 0+ |  |  |
| 197Os | 76 | 121 |  | 2.8(6) min |  |  |  |