Question

The radius of electron in second excited state of hydrogen atom is

Answer 1

The thing about this derivation is that I assumed that the Bohr model is valid. Of course, in light of Quantum Mechanics, this isn’t exactly true. It happens to give the correct answer for the Hydrogen Atom, which is simple to analyze. But it’s not exactly a correct model.

Also, I happened to assume quantization of the energy states. You can actually get around that by modelling the electron as a standing wave. Therefore, you can derive the quantization condition from there on out.

Also, it would be nice if you showed your own working to the problem. I mean, while people are here to help, you should show that you’ve put some thought into it. Cheers :)