a Suppose hydrogen atoms absorb energy so that electrons are excited to the n = 7 energy level. Electrons then undergo these transitions, among others: (a) n = 7 to n=1 (b) n = 7 to n= 6 (c) n = 2 to n= 1 Enter the letter (a, b, or c) for each. the smallest energy? the highest frequency? the shortest wavelength? b What is the frequency of a photon resulting from the transition n=6 → n=1? h = 6.62 × 10-34 J.s

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