Pt
Platinum
Z 78 195.084 g/molTransition Metal
| 195Pt | 117 | 194.9648 | -32,793.9 | 33.775% | Stable | 1/2- | α→191Os | 1935 |
| 194Pt | 116 | 193.9627 | -34,760.1 | 32.864% | Stable | 0+ | --- | 1935 |
| 196Pt | 118 | 195.965 | -32,644.5 | 25.211% | Stable | 0+ | --- | 1935 |
| 198Pt | 120 | 197.9679 | -29,904.0 | 7.356% | Stable | 0+ | β⁻ α→194Os | 1935 |
| 192Pt | 114 | 191.961 | -36,288.5 | 0.782% | Stable | 0+ | α→188Os | 1935 |
| 190Pt | 112 | 189.9599 | -37,306.5 | 0.012% | 483.0 Gy | 0+ | α→186Os(100%) β⁺ | 1949 |
| 165Pt | 87 | 164.9997 | -320.0 | --- | 370.0 µs | (7/2-) | α→161Os(100%) | 2019 |
| 166Pt | 88 | 165.9949 | -4,780.0 | --- | 294.0 µs | 0+ | α→162Os(100%) | 1996 |
| 167Pt | 89 | 166.9928 | -6,750.0 | --- | 915.0 µs | (7/2-) | α→163Os(100%) | 1996 |
| 168Pt | 90 | 167.9882 | -11,010.0 | --- | 2.02 ms | 0+ | α→164Os(100%) β⁺→168Ir | 1981 |
| 169Pt | 91 | 168.9866 | -12,460.0 | --- | 6.99 ms | (7/2-) | α→165Os(100%) β⁺→169Ir | 1981 |
| 170Pt | 92 | 169.9825 | -16,299.0 | --- | 13.93 ms | 0+ | α→166Os(100%) β⁺→170Ir | 1981 |
| 171Pt | 93 | 170.9812 | -17,470.0 | --- | 45.5 ms | 7/2- | α→167Os(86%) β⁺→171Ir | 1981 |
| 171mPt | 93 | 170.9817 | -17,060.0 | --- | 901.0 ns | 13/2+ | γ→171Pt(100%) | 2010 |
| 172Pt | 94 | 171.9773 | -21,107.0 | --- | 97.6 ms | 0+ | α→168Os(96%) β⁺→172Ir | 1981 |
| 173Pt | 95 | 172.9764 | -21,940.0 | --- | 382.0 ms | (5/2-) | α→169Os(86%) β⁺→173Ir | 1966 |
| 174Pt | 96 | 173.9728 | -25,318.0 | --- | 862.0 ms | 0+ | α→170Os(74.9%) β⁺→174Ir | 1966 |
| 175Pt | 97 | 174.9724 | -25,709.0 | --- | 2.43 s | (7/2-) | α→171Os(64%) β⁺→175Ir | 1966 |
| 176Pt | 98 | 175.9689 | -28,934.0 | --- | 6.33 s | 0+ | α→172Os(40%) β⁺→176Ir | 1966 |
| 177Pt | 99 | 176.9685 | -29,370.0 | --- | 10.0 s | 5/2- | β⁺→177Ir(94.3%) α→173Os(5.7%) | 1966 |
| 177mPt | 99 | 176.9686 | -29,223.0 | --- | 2.35 µs | 1/2- | γ→177Pt(100%) | 1979 |
| 178Pt | 100 | 177.9656 | -31,997.0 | --- | 20.7 s | 0+ | β⁺→178Ir(92.3%) α→174Os(7.7%) | 1966 |
| 179Pt | 101 | 178.9654 | -32,268.0 | --- | 21.2 s | 1/2- | β⁺→179Ir(~100%) α→175Os(0.24%) | 1966 |
| 180Pt | 102 | 179.963 | -34,430.0 | --- | 56.0 s | 0+ | β⁺→180Ir(99.48%) α→176Os(0.52%) | 1966 |
| 181Pt | 103 | 180.9631 | -34,381.0 | --- | 52.0 s | 1/2- | β⁺→181Ir(~100%) α→177Os(0.074%) | 1966 |
| 181mPt | 103 | 180.9632 | -34,264.0 | --- | --- | 7/2- | γ→181Pt(100%) | 1992 |
| 182Pt | 104 | 181.9612 | -36,168.0 | --- | 2.67 m | 0+ | β⁺→182Ir(0.962%) α→178Os(0.038%) | 1963 |
| 183Pt | 105 | 182.9616 | -35,773.0 | --- | 6.5 m | 1/2- | β⁺→183Ir(~100%) α→179Os(0.01%) | 1963 |
| 183mPt | 105 | 182.9616 | -35,738.0 | --- | 43.0 s | 7/2- | β⁺→183Ir(96.9%) γ→183Pt(3.1%) α→179Os | 1979 |
| 183nPt | 105 | 182.9618 | -35,577.0 | --- | --- | 9/2+ | γ→183Pt(100%) | 1990 |
| 184Pt | 106 | 183.9599 | -37,332.0 | --- | 17.3 m | 0+ | β⁺→184Ir(~100%) α→180Os(0.002%) | 1963 |
| 184mPt | 106 | 183.9619 | -35,492.0 | --- | 1.01 ms | 8- | γ→184Pt(100%) | 1966 |
| 185Pt | 107 | 184.9606 | -36,688.0 | --- | 1.18 h | 9/2+ | β⁺→185Ir(~100%) α→181Os(0.005%) | 1960 |
| 185mPt | 107 | 184.9607 | -36,585.0 | --- | 33.0 m | 1/2- | β⁺→185Ir(100%) γ→185Pt | 1970 |
| 185nPt | 107 | 184.9608 | -36,487.0 | --- | 728.0 ns | 5/2- | γ→185Pt(100%) | 1996 |
| 186Pt | 108 | 185.9594 | -37,864.0 | --- | 2.08 h | 0+ | β⁺→186Ir(~100%) α→182Os(1.4e-4%) | 1961 |
| 187Pt | 109 | 186.9606 | -36,685.0 | --- | 2.35 h | 3/2- | β⁺→187Ir(100%) | 1961 |
| 187mPt | 109 | 186.9608 | -36,511.0 | --- | 311.0 µs | 11/2+ | γ→187Pt(100%) | 1976 |
| 188Pt | 110 | 187.9594 | -37,821.0 | --- | 10.16 d | 0+ | EC→188Ir(~100%) α→184Os(2.6e-5%) | 1954 |
| 189Pt | 111 | 188.9608 | -36,469.0 | --- | 10.87 h | 3/2- | β⁺→189Ir(100%) | 1955 |
| 189mPt | 111 | 188.961 | -36,296.0 | --- | 464.0 ns | 9/2- | γ→189Pt(100%) | 1970 |
| 189nPt | 111 | 188.9611 | -36,278.0 | --- | 143.0 µs | (13/2+) | γ→189Pt(100%) | 1976 |
| 191Pt | 113 | 190.9617 | -35,698.0 | --- | 2.83 d | 3/2- | EC→191Ir(100%) | 1948 |
| 191mPt | 113 | 190.9618 | -35,597.0 | --- | --- | 9/2- | γ→191Pt(100%) | 1976 |
| 191nPt | 113 | 190.9618 | -35,549.0 | --- | 95.0 µs | 13/2+ | γ→191Pt(100%) | 1967 |
| 192mPt | 114 | 191.9634 | -34,116.1 | --- | 272.0 ns | 10- | γ→192Pt(100%) | 1976 |
| 193Pt | 115 | 192.963 | -34,479.7 | --- | 50.0 y | 1/2- | EC→193Ir(100%) | 1948 |
| 193mPt | 115 | 192.9631 | -34,329.9 | --- | 4.33 d | 13/2+ | γ→193Pt(100%) | 1949 |
| 195mPt | 117 | 194.9651 | -32,534.8 | --- | 4.01 d | 13/2+ | γ→195Pt(100%) | 1960 |
| 197Pt | 119 | 196.9673 | -30,419.8 | --- | 19.89 h | 1/2- | β⁻→197Au(100%) | 1936 |
| 197mPt | 119 | 196.9678 | -30,020.2 | --- | 1.59 h | 13/2+ | γ→197Pt(96.7%) β⁻→197Au(3.3%) | 1941 |
| 199Pt | 121 | 198.9706 | -27,388.7 | --- | 30.8 m | 5/2- | β⁻→199Au(100%) | 1937 |
| 199mPt | 121 | 198.9711 | -26,964.7 | --- | 13.48 s | 13/2+ | γ→199Pt(100%) | 1959 |
| 200Pt | 122 | 199.9714 | -26,599.0 | --- | 12.6 h | 0+ | β⁻→200Au(100%) | 1957 |
| 201Pt | 123 | 200.9745 | -23,740.0 | --- | 2.5 m | (5/2-) | β⁻→201Au(100%) | 1962 |
| 201mPt | 123 | 200.9754 | -22,890.0 | --- | 10.0 s | (13/2+) | γ→201Pt | --- |
| 202Pt | 124 | 201.9756 | -22,692.0 | --- | 1.83 d | 0+ | β⁻→202Au(100%) | 1992 |
| 202mPt | 124 | 201.9776 | -20,904.0 | --- | 141.0 µs | (7-) | γ→202Pt(100%) | 2005 |
| 203Pt | 125 | 202.9791 | -19,510.0 | --- | 22.0 s | (1/2-) | β⁻→203Au(100%) | 2008 |
| 203mPt | 125 | 202.9805 | -18,140.0 | --- | 12.0 s | (13/2+) | β⁻→203Au(100%) γ→203Pt | 2008 |
| 203nPt | 125 | 202.9806 | -18,090.0 | --- | --- | (27/2-) | γ→203Pt(100%) | 2008 |
| 204Pt | 126 | 203.9811 | -17,620.0 | --- | 10.3 s | 0+ | β⁻→204Au(100%) | 2008 |
| 204mPt | 126 | 203.9832 | -15,630.0 | --- | 5.5 µs | (5-) | γ→204Pt(100%) | 2009 |
| 204nPt | 126 | 203.9833 | -15,590.0 | --- | 55.0 µs | (7-) | γ→204Pt(100%) | 2009 |
| 205Pt | 127 | 204.9862 | -12,820.0 | --- | 2.0 s | (9/2+) | β⁻→205Au | 2009 |
| 206Pt | 128 | 205.9901 | -9,240.0 | --- | 500.0 ms | 0+ | β⁻→206Au β⁻n→205Au | 2012 |
| 207Pt | 129 | 206.9956 | -4,140.0 | --- | 600.0 ms | (9/2+) | β⁻→207Au β⁻n→206Au | 2012 |
| 208Pt | 130 | 207.9995 | -500.0 | --- | 220.0 ms | 0+ | β⁻→208Au β⁻n→207Au | 2012 |