Halogen

From the Science Archives, the open-project database of science information
Jump to navigation Jump to search

halogen means any of the chemical elements fluorine, bromine,iodine,and astatine.The halogens or halogen elements are a series of nonmetal elements from Group 17 of the periodic table, made up by fluorine(F), chlorine(Cl), bromine(Br), iodine(I), and astatine(At). The undiscovered element 117, temporarily named ununseptium, may also be a halogen.


http://www.wikia.com/images/Smallwikipedialogo.png This page uses content from Wikipedia. The original article was at [1]. The list of authors can be seen in the page history. As with The Science Archives, the text of Wikipedia is available under the GNU Free Documentation License.

Like all other groups in the periodic table, halogens also follow trends. Their melting and boiling points increase down the group.