college-- chemistry

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This problem really bugs me and I did figure out the diagram but I cannot figure out the wavelength. Please help me with this problem.

The transitions of
i) n=2 to n=4
ii) n=3 to n=1
iii)n=5 to n=2
iv) n=3 to n=4
which corresponds to emission of radiation with the longest wavelength? Explain.

  • college-- chemistry -

    The levels are in the order

    n=5
    n=4
    n=3
    n=2
    n=1

    without knowing the spacing we know that n=1 to n=5 will have the highest energy and a transition between two adjacent levels will have a lower energy.

    So what is the relationship between wavelength and energy? This will then tell you which transition it corresponds to.

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