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VISUAL CHEMISTRY

ARGON

PROPERTIES
Relative atomic mass 39.948
Atomic mass (kg) 66.8x10-27
Density (g/cm3) 1.40
Physical State at STP Monatomic gas (Ar)
Melting point (°C) - 189
Boiling point (°C) - 186
Crystal Structure of solid element Face centred cubic
Stable isotopes 36Ar, 38Ar, 40Ar

STP = standard temperature and pressure. Usually considered as room temperature and pressure.

 
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