In an orbital motion, the angular momentum vector is :

Angular momentum is vector product of

Rotational Motion - Angular Momentum

A particle performs uniform circular motion with an angular momentum L,. If the frequency of the particle motion is doubled the angular momentum becomes

Compute the angular momentum in 4th orbit, if L is the angular momentum of he electron in the 2nd orbit of hydrogen atom.

What will be the angular momentum in fourth orbit if L is the angular momentum of the electron in the second orbit of hydrogen atom ?

For a d-electron, the orbital angular momentum is :