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Which one of the following noble gas is ...

Which one of the following noble gas is obtained by radioactive disintegration ?

A

Kr

B

Ar

C

Rn

D

Xe

Text Solution

Verified by Experts

The correct Answer is:
C
Rn is radioactive and is produced by the decay of radium and thorium minerals.
`._88^226Rato._86^222Rn+._2^4He` it is a `gamma `- emitter.
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