Posted by j on Sunday, January 10, 2010 at 3:48pm.
The name for the electrons on the outer-most energy level is referred to as valence electrons. When talking about the Group A (Groups 1,2, and 13-18) elements, they increase from left-to-right across the periodic table. These generally don't apply to Group B (groups 3-12), or transition metals. Also, it is key to note Helium, which is on the far right in Group 8A (18),has only 2 valence electrons.
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