Rn
Radon
Z 86 222.0 g/molNoble Gas Radioactive
| 193Rn | 107 | 193.0097 | 9,043.0 | --- | 1.15 ms | (3/2-) | α→189Po(100%) | 2006 |
| 194Rn | 108 | 194.0061 | 5,725.0 | --- | 780.0 µs | 0+ | α→190Po(100%) β⁺→194At | 2006 |
| 195Rn | 109 | 195.0054 | 5,050.0 | --- | 7.0 ms | 3/2- | α→191Po(100%) | 2001 |
| 195mRn | 109 | 195.0055 | 5,131.0 | --- | 6.0 ms | 13/2+ | α→191Po(100%) | 2001 |
| 196Rn | 110 | 196.0021 | 1,975.0 | --- | 4.7 ms | 0+ | α→192Po(100%) β⁺→196At | 1995 |
| 197Rn | 111 | 197.0016 | 1,510.0 | --- | 54.0 ms | 3/2- | α→193Po(100%) β⁺→197At | 1995 |
| 197mRn | 111 | 197.0018 | 1,709.0 | --- | 25.6 ms | 13/2+ | α→193Po(100%) β⁺→197At | 1996 |
| 198Rn | 112 | 197.9987 | -1,230.0 | --- | 64.4 ms | 0+ | α→194Po(93%) β⁺→198At | 1984 |
| 199Rn | 113 | 198.9983 | -1,560.0 | --- | 590.0 ms | 3/2- | α→195Po(100%) β⁺→199At | 1980 |
| 199mRn | 113 | 198.9986 | -1,340.0 | --- | 310.0 ms | 13/2+ | α→195Po(100%) β⁺→199At γ→199Rn | 1981 |
| 200Rn | 114 | 199.9957 | -4,000.0 | --- | 1.09 s | 0+ | α→196Po(92%) β⁺→200At | 1971 |
| 200mRn | 114 | 199.9982 | -1,680.0 | --- | 28.0 µs | --- | γ→200Rn(100%) | 2002 |
| 201Rn | 115 | 200.9956 | -4,107.0 | --- | 7.0 s | 3/2- | α→197Po β⁺→201At | 1967 |
| 201mRn | 115 | 200.9959 | -3,863.0 | --- | 3.8 s | 13/2+ | α→197Po β⁺→201At | 1967 |
| 202Rn | 116 | 201.9933 | -6,275.0 | --- | 9.7 s | 0+ | α→198Po(78%) β⁺→202At | 1967 |
| 202mRn | 116 | 201.9957 | -3,970.0 | --- | 2.22 µs | (11-) | γ→202Rn(100%) | 2002 |
| 203Rn | 117 | 202.9934 | -6,184.0 | --- | 44.2 s | 3/2- | α→199Po(66%) β⁺→203At(34%) | 1967 |
| 203mRn | 117 | 202.9937 | -5,822.0 | --- | 26.9 s | 13/2+ | α→199Po(75%) β⁺→203At(25%) | 1967 |
| 204Rn | 118 | 203.9914 | -7,970.0 | --- | 1.24 m | 0+ | α→200Po(72.4%) β⁺→204At | 1967 |
| 205Rn | 119 | 204.9917 | -7,710.0 | --- | 2.83 m | 5/2- | β⁺→205At(75.4%) α→201Po(24.6%) | 1967 |
| 205mRn | 119 | 204.9924 | -7,053.0 | --- | --- | (13/2+) | γ→205Rn(100%) α→201Po β⁺→205At | 2010 |
| 206Rn | 120 | 205.9902 | -9,133.0 | --- | 5.67 m | 0+ | α→202Po(62%) β⁺→206At(38%) | 1954 |
| 207Rn | 121 | 206.9907 | -8,635.0 | --- | 9.25 m | 5/2- | β⁺→207At(79%) α→203Po(21%) | 1954 |
| 207mRn | 121 | 206.9917 | -7,736.0 | --- | 184.5 µs | 13/2+ | γ→207Rn(100%) | 1974 |
| 208Rn | 122 | 207.9896 | -9,655.0 | --- | 24.35 m | 0+ | α→204Po(62%) β⁺→208At(38%) | 1955 |
| 208mRn | 122 | 207.9916 | -7,827.0 | --- | 487.0 ns | 8+ | γ→208Rn(100%) | 1979 |
| 209Rn | 123 | 208.9904 | -8,941.0 | --- | 28.8 m | 5/2- | β⁺→209At(83%) α→205Po(17%) | 1952 |
| 209mRn | 123 | 208.9917 | -7,767.0 | --- | 13.4 µs | 13/2+ | γ→209Rn(100%) | 1985 |
| 209nRn | 123 | 208.9943 | -5,304.0 | --- | 3.0 µs | 35/2+ | γ→209Rn(100%) | 1985 |
| 210Rn | 124 | 209.9897 | -9,605.0 | --- | 2.4 h | 0+ | α→206Po(96%) β⁺→210At | 1952 |
| 210mRn | 124 | 209.9915 | -7,900.0 | --- | 644.0 ns | 8+ | γ→210Rn(100%) | 1979 |
| 210nRn | 124 | 209.9938 | -5,750.0 | --- | 1.06 µs | 17- | γ→210Rn(100%) | 1979 |
| 211Rn | 125 | 210.9906 | -8,755.0 | --- | 14.6 h | 1/2- | β⁺→211At(72.6%) α→207Po(27.4%) | 1952 |
| 211mRn | 125 | 210.9923 | -7,152.0 | --- | 596.0 ns | 17/2- | γ→211Rn(100%) | 1981 |
| 211nRn | 125 | 211.0002 | 150.0 | --- | 201.0 ns | 63/2- | γ→211Rn(100%) | 1981 |
| 212Rn | 126 | 211.9907 | -8,659.0 | --- | 23.9 m | 0+ | α→208Po(100%) | 1950 |
| 212mRn | 126 | 211.9925 | -7,019.0 | --- | 118.0 ns | 6+ | γ→212Rn(100%) | 1971 |
| 212nRn | 126 | 211.9925 | -6,965.0 | --- | 910.0 ns | 8+ | γ→212Rn(100%) | 1971 |
| 213Rn | 127 | 212.9939 | -5,696.0 | --- | 19.5 ms | (9/2+) | α→209Po(100%) | 1967 |
| 213mRn | 127 | 212.9957 | -4,014.0 | --- | 1.0 µs | (25/2+) | γ→213Rn(100%) | 1988 |
| 213nRn | 127 | 212.9963 | -3,491.0 | --- | 1.36 µs | (31/2-) | γ→213Rn(100%) | 1988 |
| 214Rn | 128 | 213.9954 | -4,320.0 | --- | 259.0 ns | 0+ | α→210Po(100%) | 1970 |
| 214mRn | 128 | 214.0003 | 275.0 | --- | 245.0 ns | (22+) | γ→214Rn(100%) | 1983 |
| 215Rn | 129 | 214.9987 | -1,169.0 | --- | 2.3 µs | 9/2+ | α→211Po(100%) | 1952 |
| 216Rn | 130 | 216.0003 | 253.0 | --- | 29.0 µs | 0+ | α→212Po(100%) | 1949 |
| 217Rn | 131 | 217.0039 | 3,659.0 | --- | 593.0 µs | 9/2+ | α→213Po(100%) | 1949 |
| 218Rn | 132 | 218.0056 | 5,217.4 | --- | 33.75 ms | 0+ | α→214Po(100%) | 1948 |
| 219Rn | 133 | 219.0095 | 8,829.3 | --- | 3.96 s | 5/2+ | α→215Po(100%) | 1903 |
| 220Rn | 134 | 220.0114 | 10,612.0 | --- | 55.6 s | 0+ | α→216Po(100%) β⁻ | 1900 |
| 221Rn | 135 | 221.0155 | 14,471.0 | --- | 25.7 m | 7/2+ | β⁻→221Fr(78%) α→217Po(22%) | 1956 |
| 222Rn | 136 | 222.0176 | 16,372.0 | --- | 3.82 d | 0+ | α→218Po(100%) | 1899 |
| 223Rn | 137 | 223.0219 | 20,390.0 | --- | 24.3 m | 7/2+ | β⁻→223Fr(100%) α→219Po | 1964 |
| 224Rn | 138 | 224.0241 | 22,445.0 | --- | 1.78 h | 0+ | β⁻→224Fr(100%) | 1964 |
| 225Rn | 139 | 225.0285 | 26,534.0 | --- | 4.66 m | 7/2- | β⁻→225Fr(100%) | 1969 |
| 226Rn | 140 | 226.0309 | 28,747.0 | --- | 7.4 m | 0+ | β⁻→226Fr(100%) | 1969 |
| 227Rn | 141 | 227.0353 | 32,886.0 | --- | 20.2 s | (3/2+) | β⁻→227Fr(100%) | 1986 |
| 228Rn | 142 | 228.0378 | 35,243.0 | --- | 1.08 m | 0+ | β⁻→228Fr(100%) | 1989 |
| 229Rn | 143 | 229.0423 | 39,362.0 | --- | 11.9 s | (5/2+) | β⁻→229Fr(100%) | 2009 |
| 230Rn | 144 | 230.0453 | 42,170.0 | --- | 24.0 s | 0+ | β⁻→230Fr | 2010 |
| 231Rn | 145 | 231.05 | 46,550.0 | --- | 2.0 s | (1/2+) | β⁻→231Fr | 2010 |