MDCAT Chemistry MCQ #950

An atom has an ionization energy that is unusually low. Which subatomic feature most likely contributes to this?

MDCAT Chemistry MCQ #950

  1. Question 1

    Q1. An atom has an ionization energy that is unusually low. Which subatomic feature most likely contributes to this?

    • A) High nuclear charge
    • B) Large atomic radius
    • C) Half-filled subshell stability
    • D) Strong effective nuclear charge

    Answer: Large atomic radius

    Explanation: Larger atoms have weaker hold on outer electrons. High nuclear charge increases ionization energy.