Canadian Medical Guide > Chemicals and Drugs > Inorganic Chemicals > Elements > Noble Gases > Argon Terms and Definitions

Argon

Medical Definition:	Argon. A noble gas with the atomic symbol Ar, atomic number 18, and atomic weight 39.948. It is used in fluorescent tubes and wherever an inert atmosphere is desired and nitrogen cannot be used.
Guide Notes:	a rare gas; Ar-40; Ar-36, 38 = ARGON (IM) + ISOTOPES (NIM); Ar-35, 37, 39, 41, 42 = ARGON (IM) + RADIOISOTOPES (IM)
CAS Type 1 Name:	CAS Number:	7440-37-1

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