Argon18Ar

39.948(1)

UsesThe following uses for argon are gathered from a number of sources as well as from anecdotal comments. I'd be delighted to receive corrections as well as additional referenced uses (please use the feedback mechanism to add uses).

used in electric light bulbs and in fluorescent tubes at a pressure of about 3 mm, photo tubes, glow tubes, etc.

used as an inert gas shield for arc welding and cutting blanket for the production of titanium and other reactive elements protective atmosphere for growing silicon and germanium crystals ,lasers, light

bulbs electric light bulbs and fluorescent tubes, photo tubes, glow tubes, welding, cutting, as a protective gas for other substances,

Neon10Ne

20.1797(6)

UsesThe following uses for neon are gathered from a number of sources as well as from anecdotal comments. I'd be delighted to receive corrections as well as additional referenced uses (please use the feedback mechanism to add uses).

used in making neon advertising signs, which accounts for its largest use used to make high-voltage indicators, lightning arrestors, wave meter tubes, and

TV tubes neon and helium are used in making gas lasers liquid neon is an economical cryogenic refrigerant. It has over 40 times more

refrigerating capacity per unit volume than liquid helium and more than three times that of liquid hydrogen. It is compact, inert, and less expensive than helium when it meets refrigeration requirements

UsesThe following uses for xenon are gathered from a number of sources as well as from anecdotal comments. I'd be delighted to receive corrections as well as additional referenced uses (please use the feedback mechanism to add uses).

used in making electron tubes, stroboscopic lamps, bactericidal lamps, and lamps used to excite ruby lasers for generating coherent light

used in the atomic energy field in bubble chambers, probes, and other applications where its high molecular weight is of value

potentially useful as a gas for ion engines the perxenates are used in analytical chemistry as oxidizing agents

UsesThe following uses for radon are gathered from a number of sources as well as from anecdotal comments. I'd be delighted to receive corrections as well as additional referenced uses (please use the feedback mechanism to add uses).

occasional therapeutic use earthquake prediction radiation therapy in hospitals

Krypton36Kr

83.798(2)

UsesThe following uses for krypton are gathered from a number of sources as well as from anecdotal comments. I'd be delighted to receive corrections as well as additional referenced uses (please use the feedback mechanism to add uses).

used with argon as a low-pressure filling gas for fluorescent lights used in some photographic flash lamps for high-speed photography, lamps, UV-

laser spectral line used for international measurement of a metre

BALLOONSHave you ever gotten a balloon as a present? You know how that balloon always tries to float away?

That's because there is helium inside. Helium is a very light element. When you put it inside a balloon it tries to float.

THE SUNHelium is in the Sun. That's right. If you were to look at everything in the sun you would discover large amounts of helium. The Sun is a really big ball of gases and all those gases are on fire. One of the results of that fire is helium. COMPRESSED AIR TANKSWhenever you see a SCUBA diver in the water, you should know that he has some helium in his air tank. Divers combine helium and regular air in those tanks at very high pressures. When they go deep in the water the helium makes it easier for them to breathe.

LASERSSometimes helium is used in lasers. It's a good element to use because it is non-reactive. Even at really high temperatures helium will not bond with other elements.

COOLANTSNuclear Reactors use helium as coolant. When helium is in a liquid form it is a very low temperature. Because a reactor can be very hot, scientists need something very cool to keep everything under control.

ROCKET FUELWhenever you see NASA shoot a rocket into space they are using helium. When they launch rockets into space, they sometimes use helium to cool the engines.

BLIMPSNext time you go to a football game you might see a blimp. That blimp is using helium to stay up in the air. Helium is lighter than regular air so it helps things float. A blimp is filled with helium and floats for a very long time. They use propellers to move around.