1. The problem statement, all variables and given/known data Please redraw this figure by assuming that an electron can have spin quantum number ms = +1/2 (arrow up), ms = 0 (marked as "I"), or ms = -1/2 (arrow down). It is important to clearly state your arguments/reasoning. http://s30.postimg.org/jz7tfeha9/wow.png 2. Relevant equations None 3. The attempt at a solution I think I'm oversimplifying this question too much. In the image, there are arrows that point up and down and they represent the spin of an electron. I know there are two electrons per orbital. If there are two arrows, one pointing up and one pointing down, wouldn't the arrows cancel out and be equal to 0? Then any atoms that don't have all their states equal to zero would be positive, since the positive spin number always go first. Wouldn't this mean I would just have to put a zero where there are two arrows and a +1/2 where there is an arrow pointing up? This seems too simple to be correct.