Isotopes of Radon (Z=86)

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Isotope Half-life Spin Parity Decay Mode(s) or Abundance
196Rn 3 ms 0+ %A ~ 100
197Rn 65 ms (3/2-) %A ~ 100
197m1Rn 19 ms (13/2+) %A ~ 100
198Rn 64 ms0+ %A=100
199Rn 0.62 s (3/2-) %A=94 sys, %EC+%B+=6 sys
199m1Rn 0.32 s (13/2+) %A=97 sys, %EC+%B+=3 sys
200Rn 0.96 s 0+ %A=86 +14-4, %EC+%B+<18
201Rn 7.0 s (3/2-) %A ~ 80 , %EC+%B+ ~ 20
201m1Rn 3.8 s (13/2+) %A ~ 90, %EC+%B+ ~ 10, %IT ~ 0
202Rn 10.0 s 0+ %A=86 3, %EC+%B+=14 3
203Rn 45 s (3/2,5/2)- %A=66 9, %EC+%B+=34 9
203m1Rn 28 s (13/2+) %A ~ 80 sys%EC+%B+ ~ 20 sys
204Rn 1.24 m 0+ %A=73 1, %EC+%B+=27 1
205Rn 2.8 m 5/2- %EC+%B+=77 4, %A=23 4
206Rn 5.67 m 0+ %A=63 6, %EC+%B+=37 6
207Rn 9.25 m 5/2- %EC+%B+=79 3, %A=21 3
208Rn 24.35 m 0+ %A=62 7, %EC+%B+=38 7
209Rn 28.5 m 5/2- %EC+%B+=83 2, %A=17 2
210Rn 2.4 h 0+ %A=96 1, %EC+%B+=4 1
211Rn 14.6 h 1/2- %EC=72.6 17, %A=27.4 17
212Rn 23.9 m 0+ %A=100
213Rn 25.0 ms (9/2+) %A=100
214Rn 0.27 us0+ %A=100
214m1Rn 0.69 ns6+
214m2Rn 6.5 ns8+
215Rn 2.30 us 9/2+ %A=100
216Rn 45 us 0+ %A=100
217Rn 0.54 ms 9/2+ %A=100
218Rn 35 ms 0+ %A=100
219Rn 3.96 s 5/2+ %A=100
220Rn 55.6 s 0+ %A=100
221Rn 25 m7/2(+) %B-=78 1, %A=22 1
222Rn 3.8235 d 0+ %A=100
223Rn 23.2 m 7/2 %B-=100, %A=0.0004 sys
224Rn 107 m 0+ %B-=100
225Rn 4.5 m 7/2- %B-=100
226Rn 7.4 m 0+ %B-=100
227Rn 22.5 s %B-=100
228Rn 65 s 0+ %B-=100
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory
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