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Chemicals/Radons

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Radon is a radioactive, colorless, odorless, tasteless noble gas.

Emissions

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Radon spectrum is 400 nm - 700 nm. Credit: McZusatz.{{free media}}

Gases

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Radon is, under standard conditions, gaseous and easily inhaled, and therefore a health hazard.

Radon is "one of the noble gases."[1]

The molecules Rn
2 and RnXe were found to be significantly stabilized by spin-orbit coupling.[2]

Radon is a colorless, odorless, and tasteless[3] gas and therefore is not detectable by human senses alone. At standard temperature and pressure, it forms a monatomic gas with a density of 9.73 kg/m3, about 8 times the density of the Earth's atmosphere at sea level, 1.217 kg/m3.[4] It is one of the densest gases at room temperature and is the densest of the noble gases.

Liquids

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Although colorless at standard temperature and pressure, when cooled below its freezing point of 202 K (−71 °C; −96 °F), it emits a brilliant radioluminescence that turns from yellow to orange-red as the temperature lowers.[5] Upon condensation, it glows because of the intense radiation it produces.[6] It is sparingly soluble in water, but more soluble than lighter noble gases. It is appreciably more soluble in organic liquids than in water. Its solubility equation is as follows,[7][8][9]

 ,

where   is the molar fraction of Radon,   is the absolute temperature, and   and   are solvent constants.

Alloys

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Radon carbonyl (RnCO) has been predicted to be stable and to have a linear molecular geometry.[10]

Resources

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See also

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References

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  1. ↑ radon. San Francisco, California: Wikimedia Foundation, Inc. 27 September 2013. https://en.wiktionary.org/wiki/radon. Retrieved 5 October 2013. 
  2. ↑ Runeberg, Nino; Pyykkö, Pekka (1998). "Relativistic pseudopotential calculations on Xe2, RnXe, and Rn2: The van der Waals properties of radon". International Journal of Quantum Chemistry 66 (2): 131. doi:10.1002/(SICI)1097-461X(1998)66:2<131::AID-QUA4>3.0.CO;2-W. 
  3. ↑ "A Citizen's Guide to Radon: The Guide to Protecting Yourself and Your Family from Radon". Epa.gov. 2016.
  4. ↑ Williams, David R. (2007-04-19). "Earth Fact Sheet". NASA. Retrieved 2008-06-26.
  5. ↑ "Radon". Jefferson Lab. Retrieved 2008-06-26.
  6. ↑ Thomas, Jens (2002). Noble Gases. Marshall Cavendish. p. 13. https://books.google.com/books?id=T0Iiv0BJ1E0C&pg=PA13. 
  7. ↑ Gerrard, W (1979). Solubility Data Series (Vol.2 ed.). Pergamon Press. pp. 264–271. https://iupac.github.io/SolubilityDataSeries/volumes/SDS-2.pdf. 
  8. ↑ Battino, R (1979). Solubility Data Series (Vol.2 ed.). Pergamon Press. pp. 227–234. https://iupac.github.io/SolubilityDataSeries/volumes/SDS-2.pdf. 
  9. ↑ Saito, M (1999). "Determination of Radon Solubilities to 1,2-Dimethylbenzene, 1,3- Dimethylbenzene, 1,4-Dime thylbenzene, 1,3,5-Trimethylbenzene, 1, 2,4-Trimethylbenzene and 1-Isopropyl-4-methylbenzene". Nippon Kagaku Kaishi (6): 363–368. doi:10.1246/nikkashi.1999.363. https://www.jstage.jst.go.jp/article/nikkashi1972/1999/6/1999_6_363/_article/download/-char/ja. 
  10. ↑ Malli, Gulzari L. (2002). "Prediction of the existence of radon carbonyl: RnCO". International Journal of Quantum Chemistry 90 (2): 611. doi:10.1002/qua.963. 
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