Four electrons in an atom have the sets of quantum numbers as given below. Which electron in at the highest energy level?

(n+l) ruleoption 1: 4s (4+0)=4option 2:3s (3+0)=3option 3:3d (3+2) =5option 4:4p (4+1)=5If (n+l) value is same ,the energy depends on principle quantum no.so as the principle Q.No.  increases energy also increases