engineering physics MCQ #341

The energy of the nth orbit in hydrogen atom is given by En = -13.6 / n² eV. What is the energy of the 3rd orbit?

engineering physics MCQ #341

  1. Question 1

    Q1. The energy of the nth orbit in hydrogen atom is given by En = -13.6 / n² eV. What is the energy of the 3rd orbit?

    • A) -1.51 eV
    • B) -3.4 eV
    • C) -6.04 eV
    • D) -12.09 eV

    Answer: -1.51 eV

    Explanation: Using En = -13.6 / n², for n = 3, En = -13.6 / 3² = -1.51 eV.