Basic Information
Name: argon
Symbol: ar
Classification: Argon is a noble gas and a nonmetal
color:colorless
Atomic weight: 39.948
state: gas
Melting Point: -189.3 oC, 83.85 K
Boiling Point: -185.8 oC, 87.3 K
Shells: 2,8,8
Electron configuration:1s2 2s2 2p6 3s2 3p6
Density @ 20oC: 0.001784 g/cm3
Atomic volume: 22.4 cm3/mol
Structure: hcp: fcc: face-centered cubic when solid
Hardness: