Argon was used by isolating by examination of the residue obtained by removing nitrogen, oxygen, carbon dioxide, and water from clean air.
Physical Properties of Argon are Density of Solid, Molar Volume, and Thermal Conductivity.
Chemical Properties of Argon are Melting Point and Boiling Point.
Some unusual facts about Argon: It is the third most prevalent gas in the Earth's atmosphere. It makes up 1.28% of the Earth's atmosphere. It was the first noble gas to be discovered.