hi guys i would like help with the following questions help please
1) Explain how the lines in an atomic emission spectrum are formed and why the frequencies of these lines are unique for a given element.
2) Describe the main features of an atomic absorption spectrum
3) Explain the occurence of an emission spectrum in terms of changes in electronic energy levels and explain why such spectra are unique for individual elements
4) How does the emission and absorption spectra prove energy shells