Write the quantum condition suggested by Bohr for the angular momentum of the electron.

(N/A) According to Bohr's second postulate,the electron revolves around the nucleus only in those orbits for which its angular momentum is an integral multiple of $\frac{h}{2\pi}$.
Mathematically,this condition is expressed as:
$L = mvr = \frac{nh}{2\pi}$
Where:
$L$ is the angular momentum of the electron.
$m$ is the mass of the electron.
$v$ is the velocity of the electron in its orbit.
$r$ is the radius of the orbit.
$n$ is the principal quantum number $(n = 1, 2, 3, ...)$.
$h$ is Planck's constant.