Isotopes of Radon - Table

Table

nuclide
symbol		 historic
name		 Z(p) N(n)
isotopic mass (u)
 half-life decay
mode(s)		 daughter
isotope(s)		 nuclear
spin		 representative
isotopic
composition
(mole fraction)		 range of natural
variation
(mole fraction)
excitation energy
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
 α 192Po 0+
β+ (rare) 196At
197Rn 86 111 197.00158(7) 66(16) ms
 α 193Po 3/2-#
β+ (rare) 197At
197mRn 200(60)# keV 21(5) ms
 α 193Po (13/2+)
β+ (rare) 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+
β+β+ (rare) 212Po
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+
β+β+ (rare) 214Po
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+ Trace
219Rn Actinon
Actinium emanation		 86 133 219.0094802(27) 3.96(1) s α 215Po 5/2+ Trace
220Rn Thoron
Thorium emanation		 86 134 220.0113940(24) 55.6(1) s α 216Po 0+ Trace
β-β- (rare) 220Ra
221Rn 86 135 221.015537(6) 25.7(5) min β- (78%) 221Fr 7/2(+)
α (22%) 217Po
222Rn Radon
Radium emanation
Emanation
Emanon
Niton		 86 136 222.0175777(25) 3.8235(3) d α 218Po 0+ Trace
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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