Talk:Main group element
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Correction: Hydrogen and Zinc are not main group elements, according to my text.
Also, this page could include some of the attributes of main group elements, including trends in atomic size (bigger as you go down the group, smaller as you go across the period).
[edit] Column numbering of the periodic table
The modern periodic table use column numbers 1-18. The old nomenclature (N-A and N-B) is misleading because the different conventions. JF Gal gal@unice.fr —Preceding unsigned comment added by 134.59.7.72 (talk) 14:01, 10 March 2008 (UTC)