1. Tardigrade
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  4. If Ep and Ek are the potential energy and kinetic energy of the electron in a stationary orbit in the hydrogen atom, the value of Ep/Ek is

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Q. If $E_p$ and $E_k$ are the potential energy and kinetic energy of the electron in a stationary orbit in the hydrogen atom, the value of $E_p/E_k$ is

KCETKCET 1999Atoms

Solution:

Here, $E_p = - \frac{1}{4 \, \pi \, \in_0} \frac{Ze^2}{r}$ and $E_k = \frac{1}{8 \, \pi \, \in_0} \frac{Ze^2}{r}$
$\therefore $ $\frac{E_p}{E_k} = - 2$