If the radius of inner most electronic o...

If the radius of inner most electronic orbit of a hydrogen atom is `5.3xx10^(-11)` m, then the radii of `n=2` orbit is

A

`21.16 xx 10^(-11)` metre

B

`15.87 xx 10^(-11)` metre

C

`10.58 xx 10^(-11)` metre

D

`2.64 xx 10^(-11)` metre

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The correct Answer is:

A

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