Radon

86
Rn
Gruppe
18
Periode
6
Blok
p
Protons
Electrons
Neutrons
86
86
136
General Properties
Atomnummer
86
Atommasse
[222]
Mass Number
222
Kategori
Ædelgasser
Farve
Colorless
Radioactive
Ja
The name was derived from radium; called niton at first, from the Latin word nitens meaning shining
Krystalstruktur
n/a
History
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.
Elektroner i hver skal
2, 8, 18, 32, 18, 8
Elektronkonfiguration
[Xe] 4f14 5d10 6s2 6p6
Rn
Upon condensation, radon glows because of the intense radiation it produces
Physical Properties
Tilstandsform
Gas
Massefylde
0,00973 g/cm3
Smeltepunkt
202 K | -71,15 °C | -96,07 °F
Kogepunkt
211,3 K | -61,85 °C | -79,33 °F
Smeltevarme
3 kJ/mol
Fordampningsvarme
17 kJ/mol
Varmefylde
0,094 J/g·K
Abundance in Earth's crust
n/a
Abundance in Universe
n/a
Illustration
Billede akkrediteringer: Images-of-elements
Illustration of radon
CAS Number
10043-92-2
PubChem CID Number
24857
Atomic Properties
Atomradius
120 pm
Kovalent radius
150 pm
Elektronegativitet
-
Ionization Potential
10,7485 eV
Atomic Volume
50,5 cm3/mol
Varmeledningsevne
0,0000364 W/cm·K
Oxidationstrin
2, 4, 6
Applications
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
Isotoper
Stable Isotopes
-
Unstable Isotopes
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