JEE CHEMISTRY MCQ: P-BLOCK ELEMENTS

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Which noble gas is not found in atmosphere?

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Correct option: A

\mathrm{Rn}

Option A (

\mathrm{Rn}

) is correct because Radon (Rn) is a radioactive noble gas that is not typically found in the atmosphere due to its origin from radioactive decay.

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17^{\text {th }}

{O}_2

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\mathrm{C}{\mathrm{N}^ - }

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{H}_2 {~S}_2 {O}_8

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