MDCAT Chemistry MCQ #894

Which concept explains why electrons occupy the lowest energy orbitals first?

MDCAT Chemistry MCQ #894

  1. Question 1

    Q1. Which concept explains why electrons occupy the lowest energy orbitals first?

    • A) Aufbau Principle
    • B) Hund's Rule
    • C) Pauli Exclusion
    • D) Wave function

    Answer: Aufbau Principle

    Explanation: Aufbau fills orbitals in energy order. Hund's applies to degenerate orbitals.