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Determine the radius of the first orbit ...

Determine the radius of the first orbit of hydrogen atom. What would be the velocity and frequency of electron in this orbit? Given `h=6.6xx10^(-34)Js, m=9xx10^(-31)kg , e=1.6xx10^(-19)C, K=9xx10^(9)Nm^(2)C^(-2)`.

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The correct Answer is:
`0.53A^(@); 2.19xx10^(6)ms^(-1) ; 6.6xx10^(15)Hz`
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