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Argon

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Argon
Ar-TableImage.png
Atomic symbol Ar
Atomic number 18
Atomic mass 39.95
Classification Noble gas
Melting point -189.2°C83.95 K
-308.56 °F
151.11 °R
Boiling point -185.3°C87.85 K
-301.54 °F
158.13 °R
Density .00178 g/cm³
Electron shell 018 Argon.png
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