Question

What is Orbital motion?

Answer 1

orbital motion is nothing but electrons revolving around the nucleus in their fixed orbits as like of how planets revolve around the sun

Answer 2

what is orbital ? if you understand this then you also understand orbital motion .
orbital :- it is related to atom.
a three dimensional real space around the nucleus where probability of finding a particular electron is maximum is called orbital.
now you knew within orbital electron exist . you also know electron is very sensitive particle in the nucleus , so they moves around the nucleus , if electron moves in own orbital is known as orbital motion .