MDCAT Chemistry MCQ #795

Why does the second ionization energy of sodium show a drastic increase compared to the first?

MDCAT Chemistry MCQ #795

  1. Question 1

    Q1. Why does the second ionization energy of sodium show a drastic increase compared to the first?

    • A) Removal of an electron from a lower energy shell
    • B) Increased electron-electron repulsion
    • C) Greater shielding effect in the first ionization
    • D) Formation of a noble gas configuration

    Answer: Removal of an electron from a lower energy shell

    Explanation: The second ionization removes an electron from the 2p orbital, not 3s. Option D explains first ionization, not the second.