MDCAT Chemistry MCQ #902

How does the penetration effect influence electron shielding in multi-electron atoms?

MDCAT Chemistry MCQ #902

  1. Question 1

    Q1. How does the penetration effect influence electron shielding in multi-electron atoms?

    • A) Inner electrons shield outer ones less effectively
    • B) Electrons in s-orbitals penetrate closer to nucleus
    • C) Outer electrons shield inner ones
    • D) Shielding increases with higher atomic number

    Answer: Electrons in s-orbitals penetrate closer to nucleus

    Explanation: s-orbitals penetrate closer, experiencing higher effective nuclear charge than p-orbitals.