engineering physics MCQ #595

The energy required to excite a hydrogen atom from n = 1 to n = 2 is

engineering physics MCQ #595

  1. Question 1

    Q1. The energy required to excite a hydrogen atom from n = 1 to n = 2 is

    • A) 10.2 eV
    • B) 3.4 eV
    • C) 13.6 eV
    • D) 6.8 eV

    Answer: 10.2 eV

    Explanation: Calculate E2 = -3.4 eV and E1 = -13.6 eV, then ΔE = E2 - E1 = -3.4 - (-13.6) = 10.2 eV.