The solutions to schrödinger's equation for the hydrogen atom are wave functions that are characterised by three quantum numbers n, 1 and mi. for each quantum number answer the following questions: (i) what property of the quantum state is determined by the quantum number? (ii) write down an expression for that physical quantity, defining terms as neces- sary. (b) the energy levels obtained by the solving schrödinger's equation for hydrogen are degenerate. explain what this means and give an expression for the degeneracy of an energy level. (c) if dirac's full relativistic treatment is used, how are the energy levels changed? (d) explain the lamb shift