What group is argon in?
Gases that are noble or inert. Helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Ro) are the noble gases or inert gases in Group 8A (or VIIIA) of the periodic table (Rn). The name derives from the fact that certain elements are almost non-reactive with other elements or compounds.