engineering chemistry MCQ #1000

The ionization energy of He⁺ is

engineering chemistry MCQ #1000

  1. Question 1

    Q1. The ionization energy of He⁺ is

    • A) 13.6 eV
    • B) 27.2 eV
    • C) 54.4 eV
    • D) 6.8 eV

    Answer: 54.4 eV

    Explanation: Ionization energy is proportional to Z². For He⁺, Z = 2, so ionization energy = 13.6 * 2² = 13.6 * 4 = 54.4 eV.