MDCAT Chemistry MCQ #817

Which element's electron affinity is unexpectedly negative despite being in group 16?

MDCAT Chemistry MCQ #817

  1. Question 1

    Q1. Which element's electron affinity is unexpectedly negative despite being in group 16?

    • A) Sulfur
    • B) Oxygen
    • C) Selenium
    • D) Tellurium

    Answer: Oxygen

    Explanation: Oxygen's small size causes strong electron repulsion, making its electron affinity negative. A and C are positive.