As lowest n value mean lowest energy then lowest n+l value mean?

The lowest n+l value would also correspond to the lowest energy level. In general, the energy of an electron in an atom is determined by both the principal quantum number (n) and the azimuthal quantum number (l). The n+l rule states that when two electrons have the same principal quantum number (n), the electron with the lower sum of n+l will have the lower energy level. Therefore, the lowest n+l value would correspond to the lowest energy level.

Lowest energy