Periodic table

 

 

Atomic number:86

Group numbers:18

Period:6

Electronic configuration:[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁶

Formal oxidation number:0

Electronegativities:-

Atomic radius / pm:240

Relative atomic mass:[222]

 

Radon was discovered by Robert Bowie Owens and Ernest Rutherford (GB) in 1899. The origin of the name is variation of the name of element radium; radon was called niton at first, from the Latin word nitens meaning shining. It is a colourless, odourless radioactive, heavy, noble gas that is chemically inert and non-flammable but is highly radiotoxic and carcinogen by inhalation. Residential radon testing is relatively simple and while the kit needs to be sent to a lab for processing the results won't require enrolling in college online to read. Radon is formed from the decay of radium in the earths crust. It is used to treat some forms of cancer.

PHYSICAL PROPERTIES

Density / g dm^-3:4400 (liquid, b.p.)

 9.73 (gas, 273 K)

Molar volume / cm³mol^-1:50.45 (liquid, b.p.)

 22816.03 (gas, 273 K)

Electrical resistivity / μΩcm:- (20 °C)

THERMAL PROPERTIES

Thermal conductivity / W m^-1K^-1:0.0036

Melting point / °C:-71

Boiling point / °C:-61.7

Heat of fusion / kJ mol^-1:2.7

Heat of vaporization / kJ mol^-1:18.1

Heat of atomization / kJ mol^-1:0

IONIZATION ENERGIES

First ionization energy / kJ mol^-1:1037.08

Second ionization energy / kJ mol^-1:-

Third ionization energy / kJ mol^-1:-

ABUNDANCE OF ELEMENTS

in the atmosphere / ppm:-

in the Earth's crust / ppm:-

in the oceans / ppm:9E-15

CRYSTALLOGRAPHIC DATA

ISOTOPES

REDUCTION POTENTIALS

 

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Periodic Table of the Elements

 

Citing this page:

Generalic, Eni. "Radon." EniG. Periodic Table of the Elements. 16 May 2013. KTF-Split. {Date of access}. <http://www.periodni.com/rn.html>.