Question

what are uses of helium, neon ,agron , krypton,xenon, randon

Answer 1

The noble gases make a group of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn). Ununoctium(Uuo) is predicted to be a noble gas as well, but its chemistry has not yet been investigated.
For the first six periods of the periodic table, the noble gases are exactly the members of group 18 of the periodic table. Noble gases are typically highly unreactive except when under particular extreme conditions. The inertness of noble gases makes them very suitable in applications where reactions are not wanted. For example, argon is used in light bulbs to prevent the hot tungsten filament from oxidizing; also, helium is used in breathing gas by deep-sea divers to prevent oxygen and nitrogen toxicity.

The properties of the noble gases can be well explained by modern theories of atomic structure: their outer shell of valence electronsis considered to be "full", giving them little tendency to participate in chemical reactions, and it has been possible to prepare only a few hundred noble gas compounds. The meltingand boiling points for a given noble gas are close together, differing by less than 10 °C (18 °F); that is, they are liquids over only a small temperature range.

Answer 2

Hey !!

USES OF HELIUM

• Oxygen - helium mixture is also used in the treatment of asthma.
• Helium is chemically inactive and does not become radioactive. Hence it is used in gas cooled atomic reactors as a heat transfer agent.
• Because of very low solubility of helium in blood, an oxygen - helium mixture is used for artificial respiration in deep sea diving instead of air because nitrogen present in air dissolves in blood under high pressure when sea diver goes into deep sea. When he comes to the surface, nitrogen bubbles out of the blood due to sudden release of pressure causing pain. This disease is called ''BENDS''.

USES OF NEON

• Neon is mainly used in discharge tubes and fluorescent lamps for advertising purposes. Neon when used in a discharge tube produces an orange red glow which can be seen at long distances even in mists and fogs. However, when neon is mixed with other gases, and used in discharged tubes, glows of different colours known as ''neon signs are produced.
• Neon has a remarkable property of carrying extremely high currents even under high voltages. Therefore, neon is used in safety devices for protecting electrical instruments such as voltmeters , relays and rectifiers from high voltage.
• It is used for filling sodium vapour lamps.

USES OF ARGON

• Argon is used mainly to provide an inert atmosphere in high temperature metallurgical processes such as arc welding of metals and alloys.
• In the laboratory, it is used for handling substances which are air sensitive.
• Pure argon is used as a carrier gas in gas chromatography.

USES OF KRYPTON

• Krypton is used in high efficiency miners 'cap lamps'.
• Krypton - 85 one of the isotopes of Kr, is used in electric tubes for regulating voltage and for testing leaks. Krypton - 85 is also used for measuring thickness of metal and plastic sheeting.

USES OF XENON

• Krypton and xenon are more efficient than argon in gas filled lamps because of their lower thermal conductivities but due to their scarcity and high cost they are used to a much smaller extent.
• A mixture of krypton and xenon has also been used in some tubes for high speed photography.

USES OF RANDON

• Being radioactive, radon is used in radioactive research.
• It is used for normal treatment of cancer and other malignant growths.
• It is used in X-ray photography for the detection of flaws in metals and other solids.

GOOD LUCK !!