For an eletron with nor principal quantum number =2
the number of subshell would be 2 ( s and p) and the number of orbitals would be 4( 1 from s subshell and 3 from p subshell)
2) The number of eletrons that is possible for i=2 is 10 eletrons. I=2 repersents the d subshell it can have upto 10 eletrons.