A property of an electron's rotational motion which is related to the shape of its orbital is the Orbital Angular Momentum

The orbital angular momentum is (L) =$\sqrt{\mathrm{l}\left(\mathrm{l}+1\right)}\frac{\mathrm{h}}{2\mathrm{\pi }}$

where, l=azimuthal quantum number

h=planck's constant

Orbital angular momentum for d electron is

$$\begin{gathered} =\sqrt{2\left(2+1\right)}\frac{\mathrm{h}}{2\mathrm{\pi }} \\ =\sqrt{6}\frac{\mathrm{h}}{2\mathrm{\pi }} \\ \hslash =\frac{\mathrm{h}}{2\mathrm{\pi }} \end{gathered}$$

Hence, orbital angular momentum=$\sqrt{6}\hslash$