for what we are studying one s two s three s............what is the use of it ? Share with your friends Share 1 Fathima answered this From the subshell electronic configuration we can easily get details about atomic structure,block,period etc. 1 View Full Answer Brida answered this the main use is that it will define the atomic structures in a higher level.In m shell there are only 8 electrons even though it can contain 18 electrons.This explains the use of subshell . 1