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Calculate the radius and velocity of the...

Calculate the radius and velocity of the electron in the `n^(th)` orbit in hydrogen atom from the following data `e=1.6xx10^(-19)C, m = 9.11 xx10^(-31) , h = 6.625xx10^(-34) JS, epsilon_(0) = 8.85xx10^(-12) " Fm "^(-1) and c = 3 xx10^(8) ms^(-1)`

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