If the electron in a hydrogen atom moves from ground state orbit to $5^{\text {th }}$ orbit, then the…
If the electron in a hydrogen atom moves from ground state orbit to $5^{\text {th }}$ orbit, then the potential energy of the electron
is increased
is zero
is decreased
remains unchanged
Solution
The potential energy of electron in hydrogen atom is given by
$\mathrm{U}=-\frac{1}{4 \pi \varepsilon_0} \cdot \frac{\mathrm{e}^2}{\mathrm{r}}$
Hence as $r$ increase, potential energy will increase. (It will become less negative)