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The radius of the second Bohr orbit for ...

The radius of the second Bohr orbit for hydrogen atom is________.
[Plank's constant, h = `6.6262 xx 10^-34 Js`
mass of electron = `9.109 xx 10^-31 kg`
charge on electron, `e = 1.602 xx 10^-19 C]`

A

`1.65overset@A`

B

`4.76overset@A`

C

`0.529overset@A`

D

`2.12 overset@A`

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