Radó
86
Rn
Grup
18
Període
6
Bloc
p
Protons
Electrons
Neutrons
86
86
136
Propietats Generals
Nombre atòmic
86
Massa atòmica
[222]
Nombre de massa
222
Categoria
Gasos nobles
Color
Incolor
Radioactiu
Sí
The name was derived from radium; called niton at first, from the Latin word nitens meaning shining
Estructura cristal·lina
n/a
Història
Radon was discovered in 1900 by Friedrich Ernst Dorn in Halle, Germany.
He reported some experiments in which he noticed that radium compounds emanate a radioactive gas.
In 1910, Sir William Ramsay and Robert Whytlaw-Gray isolated radon, determined its density, and determined that it was the heaviest known gas.
He reported some experiments in which he noticed that radium compounds emanate a radioactive gas.
In 1910, Sir William Ramsay and Robert Whytlaw-Gray isolated radon, determined its density, and determined that it was the heaviest known gas.
Electrons per capa
2, 8, 18, 32, 18, 8
Configuració electrònica
[Xe] 4f14 5d10 6s2 6p6
Upon condensation, radon glows because of the intense radiation it produces
Propietats Físiques
Fase
Gasós
Densitat
0,00973 g/cm3
Punt de fusió
202 K | -71,15 °C | -96,07 °F
Punt d'ebullició
211,3 K | -61,85 °C | -79,33 °F
Entalpia de fusió
3 kJ/mol
Entalpia de vaporització
17 kJ/mol
Capacitat tèrmica específica
0,094 J/g·K
Abundància a l'escorça terrestre
n/a
Abundància a l'univers
n/a
Número CAS
10043-92-2
Número CID de PubChem
24857
Propietats Atòmiques
Radi atòmic
120 pm
Radi covalent
150 pm
Electronegativitat
-
Potencial d'ionització
10,7485 eV
Volum atòmic
50,5 cm3/mol
Conductivitat tèrmica
0,0000364 W/cm·K
Estats d'oxidació
2, 4, 6
Aplicacions
Radon is used in hydrologic research that studies the interaction between ground water and streams.
Radon has been produced commercially for use in radiation therapy.
Radon has been used in implantable seeds, made of gold or glass, primarily used to treat cancers.
Radon has been produced commercially for use in radiation therapy.
Radon has been used in implantable seeds, made of gold or glass, primarily used to treat cancers.
Radon is highly radioactive and a carcinogen
Isòtops
Isòtops estables
-Isòtops inestables
195Rn, 196Rn, 197Rn, 198Rn, 199Rn, 200Rn, 201Rn, 202Rn, 203Rn, 204Rn, 205Rn, 206Rn, 207Rn, 208Rn, 209Rn, 210Rn, 211Rn, 212Rn, 213Rn, 214Rn, 215Rn, 216Rn, 217Rn, 218Rn, 219Rn, 220Rn, 221Rn, 222Rn, 223Rn, 224Rn, 225Rn, 226Rn, 227Rn, 228Rn