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  4. Which one of the following noble gas has an unusual property of diffusing through the materials such as rubber, glass or plastic ?

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Q. Which one of the following noble gas has an unusual property of diffusing through the materials such as rubber, glass or plastic ?

KCETKCET 2017The p-Block Elements - Part2

Solution:

Helium is the second lightest element. Helium is used for many purpose that require some of its unique properties such as its low boiling point, low density, low solubility high thermal conductivity or inertness helium diffuses through solids three times faster than air.