# Question: a For which of the following transitions in a hydrogen

(a) For which of the following transitions in a hydrogen atom is the photon of longest wavelength emitted: (1) n = 5 to n = 3, (2) n = 6 to n = 5, or (3) n = 2 to n = 1?

(b) Justify your answer mathematically.

(b) Justify your answer mathematically.

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