Rn - Radon

Radon is a radioactive noble gas. Discovered by Dorn in 1900 in Germany.

Atomic number - 86 Density g/mL 9 .91
Atomic weight u 222 Melting point K 202
Bonding radius A - Boiling point K 211
Atomic radius A 1 .34 Heat of vaporization kJ/mol 16 .4
Ionization Potential V 10 .748 Heat of fusion kJ/mol 2 .89
Electronegativity - - Specific heat J/gK 0 .09
The oxide is unknown.
Crystal are face centered cubic.

Electron config. : [Xe] 4f14 5d10 6s2 6p6

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
H He
Li Be B C N O F Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac** Rf Db Sg Bh Hs Mt 110 111 112 113
Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

Isotopes of Rn: Click mass number for decay process, product for element page.
198
64 msec
a/EC,7.345
Po-194/At-198
197.99877 		199
0.62 sec
a/EC,7.140
Po-195/At-199
198.99830 		200
1.06 sec
a/EC,7.043
Po-196/At-200
199.99567 		201
7.0 sec
a/EC,6.860
Po-197/At-201
200.99553 		202
9.85 sec
a/EC,4.450
Po-198/At-202
201.99322 		203
45 sec
a/EC,6.630
Po-199/At-203
202.99334 		204
1.24 min
a/EC,6.546
Po-200/At-204
203.99136
205
2.8 min
a/EC,5.240
Po-201/At-205
204.99166 		206
5.67 min
a/EC,6.384
Po-202/At-206
205.99015 		207
9.25 min
a/EC,4.610
Po-203/At-207
206.99072 		208
24.35 min
a/EC,6.260
Po-204/At-208
207.98963 		209
28.5 min
a/EC,3.930
Po-205/At-209
208.99038 		210
2.4 hr
a/EC,6.159
Po-206/At-210
209.98968 		211
14.6 hr
a/EC,2.892
Po-207/At-211
210.99058
212
23.9 min
a,6.385 MeV
Po-208
211.99068 		213
25.0 msec
a,8.243 MeV
Po-209
212.99386 		214
0.27 usec
a,9.208 MeV
Po-210
213.99534 		214a
6.5 nsec
a,10.833 MeV
Po-210
213.99709 		215
2.30 usec
a,8.839 MeV
Po-211
214.99872 		216
45 usec
a,8.200 MeV
Po-212
216.00025 		217
0.54 msec
a,7.889 MeV
Po-213
217.00391
218
35 msec
a,7.263 MeV
Po-214
218.00558 		219
3.96 sec
a,6.946 MeV
Po-215
219.00947 		220
55.6 sec
a,6.405 MeV
Po-216
220.01138 		221
25 min
a/B-,1.220
Po-217/Fr-221
221.01555 		222
3.8235 da
a,5.590 MeV
Po-218
222.01757 		223
23.2 min
B-,5.590 MeV
Fr-223
223.02166 		224
107 min
B-,5.590 MeV
Fr-224
224.02404
225
4.5 min
B-,5.590 MeV
Fr-225
225.02848 		226
7.4 min
B-,1.400 MeV
Fr-226
226.03091 		227
22.5 sec
B-,1.400 MeV
Fr-227
227.03559 		228
65 sec
B-,1.400 MeV
Fr-228
228.0 		MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass

Updated by clh on 2/6/98. This is not a publication of Phoenix College.