engineering physics MCQ #579

The energy levels in a hydrogen atom are given by En = -13.6 / n² eV. What is the energy difference between the n = 2 and n = 3 states?

engineering physics MCQ #579

  1. Question 1

    Q1. The energy levels in a hydrogen atom are given by En = -13.6 / n² eV. What is the energy difference between the n = 2 and n = 3 states?

    • A) 1.89 eV
    • B) 1.51 eV
    • C) 0.38 eV
    • D) 2.55 eV

    Answer: 1.89 eV

    Explanation: Calculate E2 = -3.4 eV and E3 = -1.51 eV, then ΔE = E3 - E2 = 1.89 eV.