any of the gaseous elements helium, neon, argon, krypton, xenon, and radon. You can find them in group 18 of the periodic table. They were believed to be nonreactive, but there are some that do react. All of these elements have their outer shell filled, so that means they are stable. Neon makes neon lights, helium can be used to air up balloons. Argon is used in light bulbs and krypton is used in lasers for laser eye surgery.
Neon is used to make neon lights. The largest use is neon gas in advertising signs. You can combine helium and neon to make helium neon lasers.
Helium is used to blow up balloons, blimps and scientific balloons. Helium can also be used as a shield for arc welding.
Argon is used in fluorescent light bulbs to prevent oxygen from corroding the hot filament. Argon is also used to form inert atmospheres for arc welding.