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符號 | 歷史 名稱 |
Z | N | 同位素質量(u) [n 1][n 2] |
半衰期 [n 2] |
衰變 方式[1] |
衰變 產物 |
原子核 自旋[n 1] |
相對豐度 (莫耳分率) |
---|---|---|---|---|---|---|---|---|---|
激發能量[n 1][n 2] | |||||||||
195Rn | 86 | 109 | 195.00544(5) | 6 ms | 3/2−# | ||||
195mRn | 50(50) keV | 6 ms | 13/2+# | ||||||
196Rn | 86 | 110 | 196.002115(16) | 4.7(11) ms [4.4(+13−9) ms] |
α | 192Po | 0+ | ||
β+ (不常見) | 196At | ||||||||
197Rn | 86 | 111 | 197.00158(7) | 66(16) ms [65(+23−14) ms] |
α | 193Po | 3/2−# | ||
β+ (不常見) | 197At | ||||||||
197mRn | 200(60)# keV | 21(5) ms [19(+8−4) ms] |
α | 193Po | (13/2+) | ||||
β+ (不常見) | 197At | ||||||||
198Rn | 86 | 112 | 197.998679(14) | 65(3) ms | α (99%) | 194Po | 0+ | ||
β+ (1%) | 198At | ||||||||
199Rn | 86 | 113 | 198.99837(7) | 620(30) ms | α (94%) | 195Po | 3/2−# | ||
β+ (6%) | 199At | ||||||||
199mRn | 180(70) keV | 320(20) ms | α (97%) | 195Po | 13/2+# | ||||
β+ (3%) | 199At | ||||||||
200Rn | 86 | 114 | 199.995699(14) | 0.96(3) s | α (98%) | 196Po | 0+ | ||
β+ (2%) | 200At | ||||||||
201Rn | 86 | 115 | 200.99563(8) | 7.0(4) s | α (80%) | 197Po | (3/2−) | ||
β+ (20%) | 201At | ||||||||
201mRn | 280(90)# keV | 3.8(1) s | α (90%) | 197Po | (13/2+) | ||||
β+ (10%) | 201At | ||||||||
IT (<1%) | 201Rn | ||||||||
202Rn | 86 | 116 | 201.993263(19) | 9.94(18) s | α (85%) | 198Po | 0+ | ||
β+ (15%) | 202At | ||||||||
203Rn | 86 | 117 | 202.993387(25) | 44.2(16) s | α (66%) | 199Po | (3/2−) | ||
β+ (34%) | 203At | ||||||||
203mRn | 363(4) keV | 26.7(5) s | α (80%) | 199Po | 13/2(+) | ||||
β+ (20%) | 203At | ||||||||
204Rn | 86 | 118 | 203.991429(16) | 1.17(18) min | α (73%) | 200Po | 0+ | ||
β+ (27%) | 204At | ||||||||
205Rn | 86 | 119 | 204.99172(5) | 170(4) s | β+ (77%) | 205At | 5/2− | ||
α (23%) | 201Po | ||||||||
206Rn | 86 | 120 | 205.990214(16) | 5.67(17) min | α (62%) | 202Po | 0+ | ||
β+ (38%) | 206At | ||||||||
207Rn | 86 | 121 | 206.990734(28) | 9.25(17) min | β+ (79%) | 207At | 5/2− | ||
α (21%) | 203Po | ||||||||
207mRn | 899.0(10) keV | 181(18) µs | (13/2+) | ||||||
208Rn | 86 | 122 | 207.989642(12) | 24.35(14) min | α (62%) | 204Po | 0+ | ||
β+ (38%) | 208At | ||||||||
209Rn | 86 | 123 | 208.990415(21) | 28.5(10) min | β+ (83%) | 209At | 5/2− | ||
α (17%) | 205Po | ||||||||
209m1Rn | 1173.98(13) keV | 13.4(13) µs | 13/2+ | ||||||
209m2Rn | 3636.78(23) keV | 3.0(3) µs | (35/2+) | ||||||
210Rn | 86 | 124 | 209.989696(9) | 2.4(1) h | α (96%) | 206Po | 0+ | ||
β+ (4%) | 210At | ||||||||
210m1Rn | 1690(15) keV | 644(40) ns | 8+# | ||||||
210m2Rn | 3837(15) keV | 1.06(5) µs | (17)− | ||||||
210m3Rn | 6493(15) keV | 1.04(7) µs | (22)+ | ||||||
211Rn | 86 | 125 | 210.990601(7) | 14.6(2) h | α (72.6%) | 207Po | 1/2− | ||
β+ (27.4%) | 211At | ||||||||
212Rn | 86 | 126 | 211.990704(3) | 23.9(12) min | α | 208Po | 0+ | ||
213Rn | 86 | 127 | 212.993883(6) | 19.5(1) ms | α | 209Po | (9/2+) | ||
214Rn | 86 | 128 | 213.995363(10) | 0.27(2) µs | α | 210Po | 0+ | ||
214mRn | 4595.4 keV | 245(30) ns | (22+) | ||||||
215Rn | 86 | 129 | 214.998745(8) | 2.30(10) µs | α | 211Po | 9/2+ | ||
216Rn | 86 | 130 | 216.000274(8) | 45(5) µs | α | 212Po | 0+ | ||
217Rn | 86 | 131 | 217.003928(5) | 0.54(5) ms | α | 213Po | 9/2+ | ||
218Rn | 86 | 132 | 218.0056013(25) | 35(5) ms | α | 214Po | 0+ | 痕量[n 3] | |
219Rn | 錒射氣 | 86 | 133 | 219.0094802(27) | 3.96(1) s | α | 215Po | 5/2+ | 痕量[n 4] |
220Rn | 釷射氣 | 86 | 134 | 220.0113940(24) | 55.6(1) s | α | 216Po | 0+ | 痕量[n 5] |
221Rn | 86 | 135 | 221.015537(6) | 25.7(5) min | β− (78%) | 221Fr | 7/2(+) | ||
α (22%) | 217Po | ||||||||
222Rn | 鐳射氣 | 86 | 136 | 222.0175777(25) | 3.8235(3) d | α | 218Po | 0+ | 痕量[n 3] |
223Rn | 86 | 137 | 223.02179(32)# | 24.3(4) min | β− | 223Fr | 7/2 | ||
224Rn | 86 | 138 | 224.02409(32)# | 107(3) min | β− | 224Fr | 0+ | ||
225Rn | 86 | 139 | 225.02844(32)# | 4.66(4) min | β− | 225Fr | 7/2− | ||
226Rn | 86 | 140 | 226.03089(43)# | 7.4(1) min | β− | 226Fr | 0+ | ||
227Rn | 86 | 141 | 227.03541(45)# | 20.8(7) s | β− | 227Fr | 5/2(+#) | ||
228Rn | 86 | 142 | 228.03799(44)# | 65(2) s | β− | 228Fr | 0+ | ||
229Rn | 86 | 143 | 229.0426536(141) | 12 s |
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