MDCAT Chemistry MCQ #840

Which element's ionization energy is higher than expected due to a half-filled p-orbital?

MDCAT Chemistry MCQ #840

  1. Question 1

    Q1. Which element's ionization energy is higher than expected due to a half-filled p-orbital?

    • A) Carbon
    • B) Nitrogen
    • C) Oxygen
    • D) Fluorine

    Answer: Nitrogen

    Explanation: Nitrogen's half-filled p-orbital (p³) is exceptionally stable. Oxygen has lower IE due to electron repulsion.