12. (b) Find the shortest vacuum-wavelength photon emitted by a downward electron transition in the Balmer series?
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![12. (b) Find the shortest vacuum-wavelength photon emitted by a downward electron
transition in the Balmer series?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5bdd839d-0655-41d7-8c89-559933636fef%2Fc9ae187d-fafa-493e-9e98-eb90219004ed%2F8jx1her_processed.png&w=3840&q=75)
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