Radon

86
Rn
Skupina
18
Perioda
6
Blok
p
Protons
Electrons
Neutrons
86
86
136
General Properties
Vrstno število
86
Atomska teža
[222]
Mass Number
222
Kategorija
Žlahtni plini
Barva
Brezbarven
Radioactive
Da
The name was derived from radium; called niton at first, from the Latin word nitens meaning shining
Kristalna struktura
n/a
Zgodovina
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.
Electrons per shell
2, 8, 18, 32, 18, 8
Razporeditev elektronov
[Xe] 4f14 5d10 6s2 6p6
Rn
Upon condensation, radon glows because of the intense radiation it produces
Physical Properties
Faza snovi
Plin
Gostota
0,00973 g/cm3
Tališče
202 K | -71,15 °C | -96,07 °F
Vrelišče
211,3 K | -61,85 °C | -79,33 °F
Talilna toplota
3 kJ/mol
Izparilna toplota
17 kJ/mol
Toplotna kapaciteta
0,094 J/g·K
Abundance in Earth's crust
n/a
Abundance in Universe
n/a
Illustration
Zasluge za slike: Images-of-elements
Illustration of radon
CAS Number
10043-92-2
PubChem CID Number
24857
Atomic Properties
Atomski polmer
120 pm
Kovalentni polmer
150 pm
Elektronegativnost
-
Ionization Potential
10,7485 eV
Atomic Volume
50,5 cm3/mol
Toplotna prevodnost
0,0000364 W/cm·K
Oksidacijska stanja
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
Isotopes
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