Last modified on August 18, 2011, at 11:19

Halogen

This is an old revision of this page, as edited by CPalmer (Talk | contribs) at 11:19, August 18, 2011. It may differ significantly from current revision.

A halogen is any element that sits in column 17 of the periodic table. The known halogens are fluorine, chlorine, bromine, iodine and the extremely rare and unstable astatine.