Valence electrons

[oxfordmuse]

How to find how many valence electrons are in an atom:

Best answer that I've found-

http://wiki.answers.com/Q/How_do_you_count_the_valence_electrons_of_an_atom

Best periodic table of the elements that I've found- (click on it to make the image bigger)

http://www.bpc.edu/mathscience/chemistry/images/periodic_table_of_elements.jpg