MDCAT Chemistry MCQ #893

How does the effective nuclear charge compare between a sodium atom and its Na⁺ ion?

MDCAT Chemistry MCQ #893

  1. Question 1

    Q1. How does the effective nuclear charge compare between a sodium atom and its Na⁺ ion?

    • A) Higher in Na⁺
    • B) Lower in Na⁺
    • C) Same in both
    • D) Depends on electron spin

    Answer: Higher in Na⁺

    Explanation: Na⁺ has fewer electrons, so less shielding. Effective nuclear charge increases.