Properties of the Elements
Argon
Chemical Symbol
Ar
Atomic Number
18
Electron Configuration
1s
2
2s
2
2p
6
3s
2
3p
6
Stable Phase at 298.15 K
Ar, gas
Density (298 K)
g/cc
Atomic Mass
39.948
Young's Modulus, ksi
Triple Point Temperature, K
83.81
Triple Point Pressure, atm
0 .6801
Thermodynamic and Structural Data
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