eFunda: General Information on Element Argon
engineering fundamentals Element Information: Argon
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Argon
18
Ar
39.948
Atomic Number 18
Atomic Weight 39.948
Electron Config. 2-2-6-2-6
Electron configuration order: 1s-2s-2p-3s-3p-3d-4s-4p-4d-4f-5s-5p-5d-5f-6s-6p-6d-7s

Mechanical Properties Conditions
Phase Temp. (K) Pressure (Pa)
Density 1.784 kg/m3 Gas  293.15  101325 
Density 1396 kg/m3 Liquid  87.293  101325 

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature 83.8 K   101325 
Boiling Temperature 87.3 K   101325 
Critical Temperature 150.87 K    
Fusion Enthalpy 30 J/g 101325 
Vaporization Enthalpy 160.96 J/g 101325 
Heat Capacity 520 J/kg-K 298.149993896 100000 

 
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