(Q696)

English

argon

chemical element with symbol Ar and atomic number 18

  • Ar
  • element 18

Statements

Argon ice 1.jpg
1,829 × 1,632; 570 KB
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39.962 dalton
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1894
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18
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1s² 2s² 2p⁶ 3s² 3p⁶
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[Ne] 3s² 3p⁶
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22.7 micropascal second
26.85 degree Celsius
1 standard atmosphere
813±1 metre per second
-185.9±0.1 degree Celsius
Argon
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Identifiers

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27 December 2018
Argon (English)
CAS no.: 7440-37-1 (English)
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28 December 2019
ARGON (English)
CAS no.: 7440-37-1 (English)
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11015
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argon
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9 July 2020
 
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