In the Bohr's hydrogen atom model,the radius | vedclass

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(D) According to the Bohr model of the hydrogen atom,the radius of the $n^{th}$ stationary orbit is given by the formula:$r_n = \frac{\varepsilon_0 n^

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$n^2$

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(D) According to the Bohr model of the hydrogen atom,the radius of the $n^{th}$ stationary orbit is given by the formula:$r_n = \frac{\varepsilon_0 n^2 h^2}{\pi Z m e^2}$In this expression,$\varepsilon_0$ is the permittivity of free space,$h$ is Planck's constant,$Z$ is the atomic number,$m$ is the mass of the electron,and $e$ is the elementary charge.Since all these parameters are constants for a given atom,the radius $r$ is directly proportional to the square of the principal quantum number $n$.Therefore,$r \propto n^2$.

In the Bohr's hydrogen atom model,the radius of the stationary orbit is directly proportional to ($n =$ principle quantum number)

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