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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  1998
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Q)

The radius of hydrogen shell is 0.53Å, then in first excited state radius of shell will be :


( A ) 2.12 Å
( B ) 1.06 Å
( C ) 8.5 Å
( D ) 4.24 Å

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