engineering physics MCQ #483

The energy of the electron in the nth orbit is En = -13.6 / n² eV. What is the energy required to remove an electron from n = 2?

engineering physics MCQ #483

  1. Question 1

    Q1. The energy of the electron in the nth orbit is En = -13.6 / n² eV. What is the energy required to remove an electron from n = 2?

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

    Answer: 3.4 eV

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