MDCAT Chemistry MCQ #772

The ionization energy of hydrogen is 13.6 eV. What is the ionization energy of Be3+?

MDCAT Chemistry MCQ #772

  1. Question 1

    Q1. The ionization energy of hydrogen is 13.6 eV. What is the ionization energy of Be3+?

    • A) 54.4 eV
    • B) 108.8 eV
    • C) 217.6 eV
    • D) 13.6 eV

    Answer: 217.6 eV

    Explanation: IE ∝ Z^2, Be3+ has Z=4, so IE = 13.6 × 4^2 = 217.6 eV. Option B is for Z=3 (Li2+).