MDCAT Chemistry MCQ #972

Why does the third ionization energy of aluminum increase dramatically compared to the second?

MDCAT Chemistry MCQ #972

  1. Question 1

    Q1. Why does the third ionization energy of aluminum increase dramatically compared to the second?

    • A) Removing an electron from a noble gas configuration
    • B) Increased electron repulsion effects
    • C) Weaker metallic bonding in Al
    • D) Higher nuclear screening

    Answer: Removing an electron from a noble gas configuration

    Explanation: Third ionization removes electron from neon core configuration. Options B/D incorrectly attribute changes to secondary factors.