1. The problem statement, all variables and given/known data An electron is in a Infinite potential well (1-dimensional box with infinite wall boundary conditions) at the second energy level. The width of the box is L. What is the electron density n(x) as a function of the position x? 2. Relevant equations time-independent Schrödinger equation: general solution: 3. The attempt at a solution From http://en.wikipedia.org/wiki/Particle_in_a_box#1-dimensional_box I'm not sure what the next step is. I'm confused with the wording "electron density n(x)". Does this mean probability (i.e. [itex]\|\psi_n(x)\|^2[/itex])?