Question

3 Use of every Noble gases

Answer 1

Xenon
Xenon is used in fluorescent bulbs, flash bulbs and lasers. Xenon emits an instant, intense light when present in discharge tubes. This property of xenon is utilized in high-speed electronic flash bulbs used by photographers.
Radon
Radon is radioactive and is used in medicine as a source of gamma rays. The gas is sealed in small capsules, which are implanted in the body to destroy malignant (e.g., cancerous) growths.

Neon
Neon is used in the familiar ‘neon sign” used in advertisement. The brilliant red glow is caused by the passage of electric current through neon gas under low pressure. The color of the light given off can be changed by mixing mercury vapor and argon with the neon.
Argon
Argon, like all the noble gases is chemically inert. It is used in filament bulbs because the metal filament will not burn in argon (i.e., argon prevents the oxidation of the hot filament, thereby prolonging its life). Its greater chemical inertness and lower thermal conductivity make argon superior to nitrogen for this purpose. Argon is also used in electric arc welding of metals as a shielding gas, to produce an inert atmosphere.

Helium

Helium is much less dense (lighter) than air and is used in balloons and blimps. Because of its inertness, it doesn’t burn in air unlike hydrogen which was formally used in large balloons with ‘flammable’ consequences. Helium is less soluble in water than nitrogen. When inhaled, it dissolves in the bloodstream in smaller quantities than nitrogen.