• Latin name:
  Radon
• English name:
  Radon
• Year discovered:
  1899
• Discovered by:
  Friedrich Ernst Dorn
• Country of Discovery:
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• Cost per 100 grams:
  ----
• CAS Number:
  CAS10043-92-2
• Electron shell:
  K2-L8-M18-N32-O18-P8-Q0-R0

Radon is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless noble gas, occurring naturally as a decay product of radium. Its most stable isotope, 222Rn, has a half-life of 3.8 days.

• Atomic number:
  86
• Atomic weight (Relative atomic mass):
  220.190117161994 (g/mol)
• Density:
  0.00973 (g/cm³)
• Melting point:
  -71.0°C = -95.80°F = 202.15K
• Boiling point:
  -61.7°C = -79.06°F = 211.45K
• Valence electrons:
  0
• Period:
  6
• Group:
  VIIIA
• Block:
  p - block
• Emission spectrum:
  

• Phase:
  Gas

  
• Fusion heat:
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• Specific heat:
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• Thermal expansion:
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• Vaporization heat:
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• Electron configuration:
  [Xe] 4f14 5d10 6s2 6p6 = 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6
Oxidation states:

• 0
• -
• -
• -
• -
• -
• -
• +2
• -
• -
• -
• -
• -
• -
• -
• Ion charge:
  ----
• The ionization potential of an atom:
  10.745 (eV)
• Atomic radius:
  120 (pm)
• Covalent radius:
  146 (pm)
• Van der Waals radius:
  220 (pm)

• Electrical conductivity:
  ----
• Electrical type:
  ----
• Magnetic type:
  ----
• Volume magnetic susceptibility:
  ----
• Mass magnetic susceptibility:
  ----
• Molar magnetic susceptibility:
  ----
• Resistivity:
  ----
• Superconducting point:
  ----

• Debye temperature:
  ----

• Colour:
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• CAS Number:
  CAS10043-92-2
• CID Number:
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• RTEC Number:
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• Brinell hardness:
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• Mohs hardness:
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• Vickers hardness:
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• Bulk modulus:
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• Young's modulus:
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• Liquid density:
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• Molar volume:
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• Poisson's ratio:
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• Shear modulus:
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• Speed of sound transmission:
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• Refractive index:
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• Thermal conductivity:
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• Electronegativity:
  ----
• Valence electrons:
  0
• Electron affinity:
  -68.0 kJ/mole

• Radioactive:
  Yes
• Half life:
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• Lifetime:
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• Neutron cross section, barn:
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• Universe contains "Radon" at the rate of
  ----
• Sun contains "Radon" at the rate of
  ----
• Oceans contain "Radon" at the rate of
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• Human body contains "Radon" at the rate of
  ----
• The Earth's crust consists of "Radon" at the rate of
  ----
• Meteorites consist of "Radon" at the rate of
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