engineering chemistry MCQ #934

The energy of the photon emitted when an electron jumps from n = 2 to n = 1 is

engineering chemistry MCQ #934

  1. Question 1

    Q1. The energy of the photon emitted when an electron jumps from n = 2 to n = 1 is

    • A) 10.2 eV
    • B) 12.09 eV
    • C) 13.6 eV
    • D) 12.75 eV

    Answer: 10.2 eV

    Explanation: Energy difference between n = 2 and n = 1 is calculated using ΔE = 13.6 (1 / 1² - 1 / 2²) = 10.2 eV.