Determine the effect of nuclear mass on the first line of the Balmer series of hydrogen by CALCULATING ITS WAVELENGTH SHIFT for deuterium and tritium. Note: There are two answers to this problem, one fordeuterium and one for tritium. They are in Ångströms if that helps. I need to know how to calculate the wavelength shifts. The only way for your answer to be helpfull is if you show how to calculate the wavelength shift.