engineering physics MCQ #335

The energy required to excite an electron from n = 2 to n = 3 in hydrogen atom is

engineering physics MCQ #335

  1. Question 1

    Q1. The energy required to excite an electron from n = 2 to n = 3 in hydrogen atom is

    • A) 1.89 eV
    • B) 1.51 eV
    • C) 2.55 eV
    • D) 3.4 eV

    Answer: 1.89 eV

    Explanation: Energy difference between n = 2 and n = 3 is calculated using ΔE = 13.6 * (1 / 2² - 1 / 3²) = 1.89 eV.