The Humphreys series is a group of lines in the spectrum of atomic hydrogen. It begins at 12 368 nm and has been traced to 3281.4 nm.
(a) What are the transitions involved?
(b) What are the wavelengths of the intermediate transitions?

Transitions involved & their respective wavelength

12→11   , Wavelength = 69073nm

11→10 , Wavelength = 52400nm

10→9 , Wavelength = 38799nm

9→8 , Wavelength = 27798nm

8→7 , Wavelength = 19075nm

Explanation:

Please see attached for workings.

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