engineering physics MCQ #484

The ionization energy of hydrogen is 13.6 eV. What is the energy required to excite an electron from n = 1 to n = 3?

engineering physics MCQ #484

  1. Question 1

    Q1. The ionization energy of hydrogen is 13.6 eV. What is the energy required to excite an electron from n = 1 to n = 3?

    • A) 12.09 eV
    • B) 10.2 eV
    • C) 1.89 eV
    • D) 12.75 eV

    Answer: 12.09 eV

    Explanation: Using the Bohr model energy formula: ΔE = 13.6 eV (1/n²_initial - 1/n²_final), ΔE = 13.6 (1 - 1/9) = 12.09 eV.