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Radon atomic weight

Radon

Radon

220
wikipedia
What is the standard atomic weight (ratio of the average mass of atoms of an element to 1/12 of the mass of an atom of carbon-12) radon, the radioactive chemical element that has the symbol Rn and atomic number 86?
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Posted at 16:18 on February 17, 2012.
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External web pages (using standard web search):

Radon - Wikipedia, the free encyclopedia
Standard atomic weight (222) Electron configuration [Xe] 4f 14 5d 10 6s 2 6p 6: Electrons per shell ... the average: the larger concentrations have a disproportionately greater weight. Indoor radon ...
http://en.wikipedia.org/wiki/Radon
Radon
Name: Radon Symbol: Rn Atomic Number: 86 Atomic Weight: 222.000000 Family: Noble Gases CAS RN: 10043-92-2 Description: Colorless, odorless, tasteless radioactive noble gas.
http://www.3rd1000.com/elements/Radon.htm
Radon - Elements Database
Radon definition. Radon atomic number, Radon atomic weight, Radon symbol, define Radon. Explain Radon. What is Radon? Radon FAQ.
http://www.elementsdatabase.com/Radon-Rn-86-element/
It's Elemental - The Element Radon
Atomic Weight: 222. Melting Point: 202 K (-71°C or -96°F) Boiling Point: 211.45 K (-61.7°C or -79 ... Radon is pronounced as RAY-don. History and Uses: Radon was discovered by Friedrich ...
http://education.jlab.org/itselemental/ele086.html
Radon
Radon is a noble gas and a nonmetal : Color: colorless : Atomic weight: (222), no stable isotopes : State: gas : Melting point:-71 o C, 202 K : Boiling point:
http://www.chemicool.com/elements/radon.html

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