engineering physics MCQ #564

The energy of the electron in the first excited state of hydrogen atom is

engineering physics MCQ #564

  1. Question 1

    Q1. The energy of the electron in the first excited state of hydrogen atom is

    • A) -3.4 eV
    • B) -6.8 eV
    • C) -1.51 eV
    • D) -13.6 eV

    Answer: -3.4 eV

    Explanation: Using the energy level formula, E_n = -13.6 / n², we find the energy of the electron in the first excited state (n = 2) to be -3.4 eV.