engineering chemistry MCQ #936

The wavelength of the radiation emitted when an electron jumps from n = 3 to n = 2 is

engineering chemistry MCQ #936

  1. Question 1

    Q1. The wavelength of the radiation emitted when an electron jumps from n = 3 to n = 2 is

    • A) 656 nm
    • B) 434 nm
    • C) 486 nm
    • D) 410 nm

    Answer: 656 nm

    Explanation: Using Rydberg formula, 1 / λ = R (1 / 2² - 1 / 3²), λ = 656 nm, which is the Hα line.