| Light bulbs
| Doesn’t react with the metal filament
| Used with O2 for deep sea dives
| Low solubility of helium in the blood.
| To inflate the tyres of large aircraft
| To fill airships and weather balloons
| Low density, does not burn
| In advertising signs because it glows red when electricity passes
| Conductor of electricity at high voltage
| In lamps used in photographic flash units, in stroboscopic lamps used in lighthouses
| Gives out a lot of light when electricity passes through
| The Zero group of the periodic table consists of six elements; helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn). These elements are called by other names like inactive gases, inert gases, rare gases and noble gases. Of all the noble gases, only helium and argon, which are available easily and in plentiful supply, have many applications. Their chemical inertness and low boiling points make them useful.
Important uses of noble gases are given below.
Uses of Helium
It is used in gas-cooled atomic reactors as a heat transfer gas or a cooling medium. It has high thermal conductivity and low viscosity. It remains unaffected by irritation. It is inert in nature and hence does not undergo corrosion.
Mixed with oxygen, it is used in the treatment of asthma. Being light, the gas diffuses more rapidly than air through the partly chocked lung passages. The mixture of helium and oxygen is used in artificial breathing of asthma patients.
Liquid helium is used for producing low temperatures required for many research projects.
It is used in producing inert atmosphere in the welding and metallurgy of certain metals (i.e. Mg, Al, Ti), which are easily oxidized.
Helium is suitable for low-temperature gas thermometry because it has a low boiling point and presents a nearly ideal gas behavior. Uses of Neon
Neon is used in neon...
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