An element which is an inert gas with atomic number 2 is :

hydrogen

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argon

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chlorine

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helium

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Solution

The correct option is D helium
Element with atomic number 2 is in the period is helium.

Helium is the first element in the inert gas family.

Hence the correct option is D.

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An element which is an inert gas with atomic number 2 is :

The correct option is D heliumElement with atomic number 2 is in the period is helium. Helium is the first element in the inert gas family.Hence the correct option is D.

The correct option is D helium
Element with atomic number 2 is in the period is helium.

Helium is the first element in the inert gas family.

Hence the correct option is D.