Radon (Rn) properties

Radon (Rn) properties

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Atomic mass, symbol and atomic number

radon is a naturally occurring element with the element symbol Rn and atomic number 86. In the periodic table it stands with an atomic mass of 222 u in the 8th main group. The chemical element discovered by Friedrich Ernst Dorn in 1900 is radioactive and is in a gaseous state at room temperature.

Profile: Radon (English Radon)

Chemical element:radon
Atomic number:86
Group:Noble gas group
Series:noble gases
explorers:Friedrich Ernst Dorn
Year of discovery:1900
Atomic properties
Atomic mass:222 u
Atomic radius:???
Covalent radius:150 pm
Van der Waals radius:220 pm
Electron configuration:Xe 4f14 5d10 6s2 6p6
ionization:1037 kJ / mol
Physical Properties
Physical state:gaseous
Crystal structure:cubic
molar volume:50,50 · 10-6 m3/ mol
Mohs hardness:/
Melting point:-71 ° C
Boiling point:-61 ° C
Heat of fusion:2.89 kJ / mol
Heat of vaporization:16.4 kJ / mol
Thermal conductivity:0.003 W
Chemical properties

Did you know that ...

  • Radon is the rarest element of the noble gas group?
  • can the name of the element be derived from the radioactive property (lat. radius)?
  • Radon in the group of noble gases is the only radioactive element?
  • Radon as an intermediate in the decay series of 238Uranium is produced?