State the laws/ Define
Inert elements

Explanation

Inert gas elements: There are seven elements that make up Group 18 of the periodic table. These elements are know as inert gas elements or noble gases. The elements are helium (He), neno (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn) and oganesson (Og).
The noble gases are colourless and odourless.
They are chemically unreactive gases under standard conditions.
They are present in atmosphere in very trace amounts.
Radon and oganesson are radioactive.
Noble gases are able to diffuse through glass, rubber, some metals and plastic materials. This makes them difficulat to handle in the laboratory.
Helium: It is the second most abundant element in the universe after hydrogen. It has the lowest boiling point of any substance known. It is used in balloons and to cool things.
Neon: It is used in advertising sing (neno lightings).
Argon: It is used in light bulbs.
Krypton: It is used in miner's cap lamps and in the signal lights on runways of airport.
Xenon: It is used in detection of mesons and gamma photons.
Radon: It is used in radiotherapy of cancer treatment.