engineering physics MCQ #496

The energy required to remove an electron from the first excited state of hydrogen is

engineering physics MCQ #496

  1. Question 1

    Q1. The energy required to remove an electron from the first excited state of hydrogen is

    • A) 3.4 eV
    • B) 6.8 eV
    • C) 1.7 eV
    • D) 13.6 eV

    Answer: 3.4 eV

    Explanation: Using the Bohr model energy formula: E2 = -13.6 / 4 = -3.4 eV, energy required to remove = 3.4 eV.