IMPORTANT!!! **** please show ALL the formulas you used to find the answer to this question, AND show ALL your work to find this answer!!! Also, make sure you write LEGIBLY on a separate sheet of paper and show all the steps!!! im struggling with this concept.
Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n = 4 principal energy level. Recall that the energy levels of the H atom are given by En = –2.18 x 10-18 J(1/n2)
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IMPORTANT!!! **** please show ALL the formulas you used to find the answer to this question,...