engineering physics MCQ #382

The energy required to excite an electron from n = 1 to n = 2 is?

engineering physics MCQ #382

  1. Question 1

    Q1. The energy required to excite an electron from n = 1 to n = 2 is?

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

    Answer: 10.2 eV

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