Radon

86
Rn
Gruppe
18
Periode
6
Block
p
Protonen
Elektronen
Neutronen
86
86
136
Generelle Eigenschaften
Ordnungszahl
86
Atommasse
[222]
Massenzahl
222
Kategorie
Edelgase
Farbe
Farblos
Radioaktiv
Ja
The name was derived from radium; called niton at first, from the Latin word nitens meaning shining
Kristallstruktur
n/a
Geschichte
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.
Elektronen pro Schale
2, 8, 18, 32, 18, 8
Elektronenkonfiguration
[Xe] 4f14 5d10 6s2 6p6
Rn
Upon condensation, radon glows because of the intense radiation it produces
Physikalische Eigenschaften
Aggregatzustand
Gasförmig
Dichte
0,00973 g/cm3
Schmelzpunkt
202 K | -71,15 °C | -96,07 °F
Siedepunkt
211,3 K | -61,85 °C | -79,33 °F
Schmelzwärme
3 kJ/mol
Verdampfungswärme
17 kJ/mol
Spezifische Wärmekapazität
0,094 J/g·K
Häufigkeit in der Erdkruste
n/a
Häufigkeit im Universum
n/a
Illustration
Danksagungen für Bilder: Images-of-elements
Illustration of radon
CAS-Nummer
10043-92-2
PubChem CID Number
24857
Atomeigenschaften
Atomradius
120 pm
Kovalenter Radius
150 pm
Elektronegativität
-
Ionisierungsenergie
10,7485 eV
Molares Volumen
50,5 cm3/mol
Wärmeleitfähigkeit
0,0000364 W/cm·K
Oxidationszustände
2, 4, 6
Anwendung
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 is highly radioactive and a carcinogen
Isotope
Stabile Isotope
-
Instabile Isotope
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