Just learn about the s,p,d orbitals. OK, in SO2, then, there are 6 shared electrons, as there are 3 non-H atoms and 18 available valence electrons. Next question, though:
In diagramming electron geometric configurations according to molecular orbital theory, how do I know when to use a pi bond or a pi* bond? Ditto for sigma, of course. I appreciate the help.
Thanks a lot for the help acid_egg