Argon

Argon (Ar)


Physical Properties:

Atomic number- 18

Atomic number - 39.948

Number of protons and electrons- 18

Number of neutrons- 22

Argon is a colorless and odorless gas pressent to a very small amount in the atmosphere. Argon is one of the noble gases, which means a gas that does not react with other elements. Today the chemical symbol for argon is Ar but intil 1957 its symbol was just an A. This element would not normally be carried out in the laboratory and argon is available commercially in cylunders at high pressure