“What does the halogen group do?”
During our tour of the periodic table we encounter a very interesting group in the column XVII called the halogens. When the halogens react with water, they form very strong acidic compounds that can made into salts. Halogens usually have an oxidation number of -1, which makes them some of the most reactive elements in science. In fact, halogens are so reactive that directly ingesting some of them can be fatal to the human body!. The elements that make up the halogens include fluorine [F], chlorine [Cl], bromine [Br], Iodine [I], and astatine [At].