Question:
If an electron is moving in the $\mathrm{n}^{\text {th }}$ orbit of the hydrogen atom, then its velocity $\left(v_{n}\right)$ for the $n^{\text {th }}$ orbit is given as :
Correct Option: , 2
Solution:
We know velocity of electron in $n^{\text {th }}$ shell of hydrogen atom is given by
$\mathrm{v}=\frac{2 \pi k Z \mathrm{e}^{2}}{\mathrm{nh}}$
$\therefore \mathrm{v} \propto \frac{1}{\mathrm{n}}$
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