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: