MDCAT Chemistry MCQ #850

Which property primarily accounts for the larger atomic radius of calcium compared to magnesium?

MDCAT Chemistry MCQ #850

  1. Question 1

    Q1. Which property primarily accounts for the larger atomic radius of calcium compared to magnesium?

    • A) Greater number of electron shells
    • B) Higher effective nuclear charge
    • C) Stronger electron-electron repulsion
    • D) Lower ionization energy

    Answer: Greater number of electron shells

    Explanation: Calcium has an additional electron shell, increasing atomic radius despite higher nuclear charge.