Радон

86
Rn
Група
18
Периода
6
блок
p
Protons
Electrons
Neutrons
86
86
136
Општи Својства
Атомски број
86
Атомска тежина
[222]
Mass Number
222
Category
Благородни гасови
Color
Colorless
Radioactive
Да
The name was derived from radium; called niton at first, from the Latin word nitens meaning shining
Кристална структура
Нема одговор
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.
Electrons per shell
2, 8, 18, 32, 18, 8
Електронска конфигурација
[Xe] 4f14 5d10 6s2 6p6
Rn
Upon condensation, radon glows because of the intense radiation it produces
Физички Својства
Фаза
Gas
Густина
0,00973 g/cm3
Точка на топење
202 K | -71,15 °C | -96,07 °F
Точка на вриење
211,3 K | -61,85 °C | -79,33 °F
Топлина на топење
3 kJ/mol
Топлина на испарување
17 kJ/mol
Specific Heat Capacity
0,094 J/g·K
Abundance in Earth's crust
Нема одговор
Abundance in Universe
Нема одговор
Illustration
Кредити на слика: Images-of-elements
Illustration of radon
CAS Number
10043-92-2
PubChem CID Number
24857
Атомски Својства
Атомски полупречник
120 pm
Ковалентен полупречник
150 pm
Електронегативност
-
Ionization Potential
10,7485 eV
Atomic Volume
50,5 cm3/mol
Thermal Conductivity
0,0000364 W/cm·K
Oxidation States
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