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chemistry

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An electron in a hydrogen atom relaxes to the n= 4 level, emitting light of 138 THz.
What is the value of n for the level in which the electron originated?

  • chemistry - ,

    a. figure energy for the photon, for the given frequency. E=hf

    b. then, E= constant(1/n^2-1/16)
    figure n

    I can check your work if necessary.

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