This is the place for questions and comments! I will usually answer questions within 24 hours, but since I am only one person, I might take a few days to get to your question. Submit your questions early if you want an answer in time!
what is the ground state energy for an electron that is confined to a square potential well with a width of 0.2nm? and what would be the wavelength of the lowest energy transition of the electron in this well?