氡有34個已知嘅同位素,其中最穩定嘅係222Rn。
符號
|
Z(p)
|
N(n)
|
質量(原子質量單位)
|
半衰期
|
原子核自旋
|
相對豐度
|
相對豐度嘅變化率
|
---|
激發能量
|
---|
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]
|
0+
|
|
|
197Rn
|
86
|
111
|
197.00158(7)
|
66(16) ms [65(+25-14) ms]
|
3/2-#
|
|
|
197mRn
|
200(60)# keV
|
21(5) ms [19(+8-4) ms]
|
(13/2+)
|
|
|
198Rn
|
86
|
112
|
197.998679(14)
|
65(3) ms
|
0+
|
|
|
199Rn
|
86
|
113
|
198.99837(7)
|
620(30) ms
|
3/2-#
|
|
|
199mRn
|
180(70) keV
|
320(20) ms
|
13/2+#
|
|
|
200Rn
|
86
|
114
|
199.995699(14)
|
0.96(3) s
|
0+
|
|
|
201Rn
|
86
|
115
|
200.99563(8)
|
7.0(4) s
|
(3/2-)
|
|
|
201mRn
|
280(90)# keV
|
3.8(1) s
|
(13/2+)
|
|
|
202Rn
|
86
|
116
|
201.993263(19)
|
9.94(18) s
|
0+
|
|
|
203Rn
|
86
|
117
|
202.993387(25)
|
44.2(16) s
|
(3/2-)
|
|
|
203mRn
|
363(4) keV
|
26.7(5) s
|
13/2(+)
|
|
|
204Rn
|
86
|
118
|
203.991429(16)
|
1.17(18) min
|
0+
|
|
|
205Rn
|
86
|
119
|
204.99172(5)
|
170(4) s
|
5/2-
|
|
|
206Rn
|
86
|
120
|
205.990214(16)
|
5.67(17) min
|
0+
|
|
|
207Rn
|
86
|
121
|
206.990734(28)
|
9.25(17) min
|
5/2-
|
|
|
207mRn
|
899.0(10) keV
|
181(18) µs
|
(13/2+)
|
|
|
208Rn
|
86
|
122
|
207.989642(12)
|
24.35(14) min
|
0+
|
|
|
209Rn
|
86
|
123
|
208.990415(21)
|
28.5(10) min
|
5/2-
|
|
|
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
|
0+
|
|
|
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
|
1/2-
|
|
|
212Rn
|
86
|
126
|
211.990704(3)
|
23.9(12) min
|
0+
|
|
|
213Rn
|
86
|
127
|
212.993883(6)
|
19.5(1) ms
|
(9/2+)
|
|
|
214Rn
|
86
|
128
|
213.995363(10)
|
0.27(2) µs
|
0+
|
|
|
214mRn
|
4595.4 keV
|
245(30) ns
|
(22+)
|
|
|
215Rn
|
86
|
129
|
214.998745(8)
|
2.30(10) µs
|
9/2+
|
|
|
216Rn
|
86
|
130
|
216.000274(8)
|
45(5) µs
|
0+
|
|
|
217Rn
|
86
|
131
|
217.003928(5)
|
0.54(5) ms
|
9/2+
|
|
|
218Rn
|
86
|
132
|
218.0056013(25)
|
35(5) ms
|
0+
|
|
|
219Rn
|
86
|
133
|
219.0094802(27)
|
3.96(1) s
|
5/2+
|
|
|
220Rn
|
86
|
134
|
220.0113940(24)
|
55.6(1) s
|
0+
|
|
|
221Rn
|
86
|
135
|
221.015537(6)
|
25.7(5) min
|
7/2(+)
|
|
|
222Rn
|
86
|
136
|
222.0175777(25)
|
3.8235(3) d
|
0+
|
|
|
223Rn
|
86
|
137
|
223.02179(32)#
|
24.3(4) min
|
7/2
|
|
|
224Rn
|
86
|
138
|
224.02409(32)#
|
107(3) min
|
0+
|
|
|
225Rn
|
86
|
139
|
225.02844(32)#
|
4.66(4) min
|
7/2-
|
|
|
226Rn
|
86
|
140
|
226.03089(43)#
|
7.4(1) min
|
0+
|
|
|
227Rn
|
86
|
141
|
227.03541(45)#
|
20.8(7) s
|
5/2(+#)
|
|
|
228Rn
|
86
|
142
|
228.03799(44)#
|
65(2) s
|
0+
|
|
|
備註:畫上#號嘅數據代表冇經過實驗嘅證明,只係理論推測,而用咗括號括係代表數據唔確定。
- 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).
- Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
- 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, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (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.