Table of
radon isotopes
Chemistry
Software Download
Isotopes Atomic Half
Decay Decay Particle Particle Spin
Magnetic
mass(u)
life modes energy energy
intensities moment(I)
(MeV) (MeV)
Rn[198] 197.9987 0.05s a
Rn[199m]
0.3s
a
(13/2+)
Rn[199] 198.9983 0.62s
a
3/2-
Rn[200] 199.9957 1.06s
a/98
6.909
0+
EC/2 8.080
Rn[201m]
3.8s
EC/10
13/2+
a/90
6.770
Rn[201] 200.9956 7.0s
a/80 6.636
6.721
(3/2-)
EC/20 6.6
Rn[202] 201.9932 9.9s
a/12 6.771
6.636
0+
EC/88 4.48
Rn[203m]
28s
a
6.548
13/2+ -0.96
Rn[203] 202.9933 45s
a/66
6.498
0
EC/34 6.1
Rn[204] 203.9913 1.24m
a/68 6.546
6.417
0+
EC/32 3.9
Rn[205] 204.9917 2.8m
a/23 6.390 6.123
0.02% (5/2-) +0.80
EC/77 5.3
6.262 23%
Rn[206] 205.9901 5.7m
a/68 6.384
6.258
0+
EC/32 3.3
Rn[207] 206.9907 9.3m b+,EC/77
4.6
5/2-
a/23 6.252
5.995 0.02%
6.068 0.15%
6.126 22.8%
Rn[208] 207.9896 24.3
a/60 6.260 5.469(2)
0.003% 0+
EC/40 2.9
6.140(2) 60%
Rn[209] 208.9904 29m
b+/83 3.93
2.16 2.3% 5/2-
+0.8388
a/17
5.887(3) 0.04%
5.898(3) 0.02%
6.039(2) 16.9%
Rn[210] 209.9897 2.4h
a/96 6.157 5.351(2)
0.005% 0+
EC/4 2.368 6.039(2)
96%
Rn[211] 210.9906 14.6h b+,EC/74
2.89
1/2- +0.60
a/26 5.964
5.619 0.7%
5.784 16.4%
5.851 8.8%
Rn[212] 211.9907 24m
a 6.385
5.587 0.05% 0+
6.260 99.95%
Rn[213] 212.9939 25.0ms
a 8.243
7.552 1% 9/2+
8.087 99%
Rn[214] 213.9963 2.7E-7s
a 9.209
9.037
0+
Rn[215] 214.9987 2.3E-6s
a 8.840
8.674
(9/2+)
Rn[216] 216.0003 4.5E-5s a
Rn[217] 217.0039 0.6ms
a 7.885
7.500 0.1% 9/2+
Rn[218] 218.0056 35ms
a 7.267
6.534 0.16% 0+
7.133 99.8%
Rn[219] 219.0095 3.96s
a 6.946
6.3130 0.05% (5/2+) -0.44
6.425 7.5%
6.5309 0.12%
6.5531 12.2%
6.8193 81%
Rn[220] 220.0114 55.6s
a 6.404
5.7486 0.07% 0+
6.2883 99.9%
Rn[221] 221.0155 25m
a/22 6.148
5.778 1.8% 7/2+ -0.020
b-/78 1.150
5.788 2.2%
6.037 18%
Rn[222] 222.0176 3.824d
a 5.590
4.987 0.08% 0+
5.4897 99.9%
Rn[223]
23m b-
Rn[224]
1.8h
b-
0+
Rn[225]
4.5m
b-
7/2 -0.70
Rn[226]
7.4m b-
Rn[227]
2s b-
Rn[228]
65s b-
m=metastable exited state
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