engineering physics MCQ #542

The energy of the nth orbit of He+ is given by En = -54.4 / n² eV. What is the energy of the ground state?

engineering physics MCQ #542

  1. Question 1

    Q1. The energy of the nth orbit of He+ is given by En = -54.4 / n² eV. What is the energy of the ground state?

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

    Answer: -54.4 eV

    Explanation: Substitute n = 1 in En = -54.4 / n² eV to get E1 = -54.4 eV.