Does ionization process release energy? In the case of helium atoms, to ionize the first electron, energy is injected, which is 24.59 eV of the experimental results. Will helium emit energy in the process? After the first electron is released, the second electron will automatically change its o...

I realize that this paragraph has raised more questions on stackexchange, but I wanted to ask this question nevertheless since I want to discuss it in terms of a counter-example. I’ve already completed a course in classical mechanics following the first part of Goldstein (that is, elementary Lag...