The distribution of isotopes of an element may yield clues about the nuclear reactions that occur in the interior of a star. Show that it is possible to use spectroscopy to confirm the presence of both 4He+ and 3He+ in a star by calculating the wavenumbers of the n=3 --> n=2 and n=2 --> n=1 transitions for each isotope.
Answer; 60923.9 cm-1 , 60921.1 cm-1
328989 cm-1 , 328974 cm-1
