氡的同位素

氡有34个已知的同位素，均具有放射性，其中最稳定的为222Rn。

**图表**
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) ms4.4(+13−9) ms
α
192Po
0+
β+ （不常见）
196At
197Rn
86
111
197.00158(7)
66(16) ms65(+23−14) ms
α
193Po
3/2−#
β+ （不常见）
197At
197mRn
200(60)# keV
21(5) ms19(+8−4) ms
α
193Po
(13/2+)
β+ （不常见）
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 (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
219Rn
锕射气
86
133
219.0094802(27)
3.96(1) s
α
215Po
5/2+
痕量
220Rn
钍射气
86
134
220.0113940(24)
55.6(1) s
α
216Po
0+
痕量
221Rn
86
135
221.015537(6)
25.7(5) min
β- (78%)
221Fr
7/2(+)
α (22%)
217Po
222Rn
镭射气
86
136
222.0175777(25)
3.8235(3) d
α
218Po
0+
痕量
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


**参考文献**
 Isotope masses from  Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).- Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
** Audi, Bersillon, Blachot, Wapstra.  The Nubase2003 evaluation of nuclear and decay properties date=20110716114059 , Nuc. Phys. A 729, pp. 3-128 (2003).
** National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the  NuDat 2.1 database date=20180714022824  (retrieved Sept. 2005).
** David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.