engineering physics MCQ #423

The energy of the electron in the nth orbit of hydrogen atom is given by En = -13.6 / n² eV. The energy of the 5th orbit is

engineering physics MCQ #423

  1. Question 1

    Q1. The energy of the electron in the nth orbit of hydrogen atom is given by En = -13.6 / n² eV. The energy of the 5th orbit is

    • A) -0.544 eV
    • B) -1.088 eV
    • C) -2.72 eV
    • D) -0.272 eV

    Answer: -0.544 eV

    Explanation: For n = 5, En = -13.6 / 5² = -0.544 eV.