[qrt388]

What's a quick way to construct MO diagrams? One of the kids in my class rather than use the whole group theoretical approach of doing the reducible representations just does something a lot simpler... though I don't really know what it is. He assigns plusses and minuses like +-++- etc. and figures out the MOs from there. Anybody understand?

[enahs]

I guess I am not really sure what you are asking.

At least in general chemistry, when everything is at the same energy level the long part is just drawing the lines. I mean, typically at that level it is just counting the electrons and filling from bottom up.

Could you maybe be a little more specific with an example, and what you are expecting it to look like, etc.