*This isn't actually coursework but i was under the assumption that questions go to this forum* 1. The problem statement, all variables and given/known data Hi, for while i've been under the impression that spectral lines of all the elements can be calculated. I did some research and found that there is a simple equation (Rydberg Equation) to determine the spectral lines of Hydrogen. However, I found a source that stated there is no simple equation to determine the spectral lines of the other elements. So my questions are: How are spectral lines predicted for elements other than hydrogen? How is the energy difference for an electron in its excited state and its ground state calculated?