- Is Reydberg equation still valid and use?
I saw that rydberg equation used for hydrogen atom,so does it still acceptable for world of physics or it just dinied like bohr model?
Do you mean for cases where the Rydberg formula does not give correct results? That is a much more complicated subject which cannot be dealt with adequately in a PF discussion thread. You should consult a textbook on QM.So what is the way to calculating orbital energy level?