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    Question

    Which of the following transitions in hydrogen atom

    will result in emission of radiation of longest wavelength?
    A n = 3 to n = 1 Correct Answer Incorrect Answer
    B n = 2 to n = 1 Correct Answer Incorrect Answer
    C n = 4 to n = 2 Correct Answer Incorrect Answer
    D n = 5 to n = 4 Correct Answer Incorrect Answer

    Solution

    The wavelength of the emitted radiation during a transition in a hydrogen atom is given by the Rydberg formula: where: wavelength. Therefore, the transition n = 5 to n = 4 will result in the emission of radiation of the longest wavelength.

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