In the fourth principal energy level,which sublevel contains electrons with the greatest energy?
A)4d
B)4f
C)4p
D)4s

Question

Quizplus · Accepted Answer

In an atom, the energy levels of electrons are determined by the principal quantum number (n) and the azimuthal quantum number (l). For a given principal energy level (n), the energy of the sublevels increases with the azimuthal quantum number (l). The order of sublevels by increasing energy within the same principal energy level is s < p < d < f. Therefore, in the fourth principal energy level, the 4f sublevel contains electrons with the greatest energy.

In the Fourth Principal Energy Level,which Sublevel Contains Electrons with the Greatest