P-block

From Wikinfo

P-block (for principal, although this orbital has nothing to do with principal quantum number) elements are made up of elements in group 13-18 in the periodic table which all occupy the highest energy orbital, the p orbital. The outer electron shell configurations of all these elements all have the from ns²np^x (x=1 to 6)

References

• Adapted from the Wikipedia article, "P-block" http://en.wikipedia.org/wiki/P-block, used under the GNU Free Documentation License