Question

The minimum orbital angular momentum of the electron in a hydrogen atom is

(a) h
(b) h/2
(c) h/2π
(d) h/λ

Answer 1

(c) h/2π

According to Bohr's atomic theory, the orbital angular momentum of an electron is an integral multiplt of h/2π.
∴ $L_{\mathrm{n}}=\frac{nh}{2\pi }$

Here,
n = Principal quantum number

The minimum value of n is 1.
Thus, the minimum value of the orbital angular momentum of the electron in a hydrogen atom is given by
$L=\frac{h}{2\pi }$