Electron energy levels closest to the nucleus are occupied before electron energy levels farther from the nucleus because the electron energy levels closest to the nucleus are
A) pulled toward the nucleus by gravity.
B) protected by the outer shell.
C) attracted to the nucleus for reasons unknown.
D) more stable than electrons farther from the nucleus.
E) Actually, electrons farther from the nucleus are filled first.

Question

Quizplus · Accepted Answer

Electron energy levels closest to the nucleus are more stable due to the stronger electrostatic attraction between the negatively charged electrons and the positively charged nucleus. This principle is foundational in atomic structure and explains the orderly filling of electron shells in an atom.

Electron Energy Levels Closest to the Nucleus Are Occupied Before