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|elName=Argon
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|eltrnCfg=1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>6</sup>
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'''Argon''' is a [[Chemical elements|chemical element]], typically found as a [[gas]] in its elemental form. It has the [[chemical symbol]] Ar, [[atomic number]] (number of [[protons]]) ''Z'' = 18, and a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 39.948 g•mol<sup> −1</sup>.


'''Argon''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Ar. Its [[atomic number]] (the number of [[proton]]s) is 18. It has a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 39.948 g•mol<sup> −1</sup>, and is typically found as a [[gas]] in its elemental form.
Argon is a monatomic noble gas. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[boiling point]] −185.85 °[[Celsius (unit)|C]], and a [[melting point]] of −189.35 °C. It is the third most common gas in the [[Earth's atmosphere]], at 0.934% by volume for dry air (0% [[humidity]]).<ref>[http://www.srh.noaa.gov/srh/jetstream/atmos/atmos_intro.htm The Atmosphere] From the website of the [[National Oceanic and Atmospheric Administration]] (NOAA) and the [[National Weather Service]] (NWS), Last updated May 5, 2009</ref>
 
Argon is considered a member of the "Nobel gas" class of element. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[boiling point]] −185.85 °[[Celsius (unit)|C]], and a [[melting point]] of −189.35 °C. It is the third most common gas in the [[Earth's atmosphere]], at 0.934% by volume.<ref>[http://www.srh.noaa.gov/srh/jetstream/atmos/atmos_intro.htm The Atmosphere] From the website of the [[National Oceanic and Atmospheric Administration]] (NOAA) and the [[National Weather Service]] (NWS), Last updated May 5, 2009</ref>


==References==
==References==
{{reflist}}
{{reflist}}[[Category:Suggestion Bot Tag]]

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Argon
39.948(1)



  Ar
18
1s22s22p63s23p6 18,3,p
[ ? ] Noble gas:
Properties:
Colorless, odorless, inert gas. Non-toxic.

Argon is a chemical element, typically found as a gas in its elemental form. It has the chemical symbol Ar, atomic number (number of protons) Z = 18, and a standard atomic weight of 39.948 g•mol −1.

Argon is a monatomic noble gas. At a pressure of 101.325 kPa, it has a boiling point −185.85 °C, and a melting point of −189.35 °C. It is the third most common gas in the Earth's atmosphere, at 0.934% by volume for dry air (0% humidity).[1]

References

  1. ↑ The Atmosphere From the website of the National Oceanic and Atmospheric Administration (NOAA) and the National Weather Service (NWS), Last updated May 5, 2009
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