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What is the wavelength in nanometers of the spectral line for hydrogen when an electron transitions from nf = 5 to ni = 2 using the Balmer equation? What is the energy of the radiation corresponding to this line in kilojoules per mole?

What is the wavelength in nanometers of the spectral line for hydrogen when an electron transitions from n_f = 5 to n_i = 2 using the Balmer equation? What is the energy of the radiation corresponding to this line in kilojoules per mole?