engineering chemistry MCQ #935

The frequency of the radiation emitted when an electron jumps from n = 2 to n = 1 is

engineering chemistry MCQ #935

  1. Question 1

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

    • A) 2.46 x 10^15 Hz
    • B) 1.23 x 10^15 Hz
    • C) 3.29 x 10^15 Hz
    • D) 4.57 x 10^15 Hz

    Answer: 2.46 x 10^15 Hz

    Explanation: Using ΔE = hf, frequency f = ΔE / h = 10.2 eV / h = 2.46 x 10^15 Hz.