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What is the smallest- wavelength (in nm unit) line in the Balmer series? * a. 364.5 nm O b. 402.5 nm c. 388 nm

What is the smallest- wavelength (in nm unit) line in the Balmer series? * a. 364.5 nm O b. 402.5 nm c. 388 nm O d. 656 nm

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