Which electron configuration represents a violation of the Pauli exclusion principle?

Question

Quizplus · Accepted Answer

Choice B (11ea7ce9_fafb_519a_b46a_13feb03c76c6_TB1822_11) represents a violation of the Pauli exclusion principle because both electrons are in the same orbital with the same spin, which is not allowed. The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers, including their spin quantum number, which must be opposite for electrons in the same orbital. The other choices all follow the Pauli exclusion principle.

Which Electron Configuration Represents a Violation of the Pauli Exclusion