Encyclopedia > Halogens

  Article Content

Halogen

Redirected from Halogens

The halogens are a chemical series. They are the elements in Group 17 (old-style: VII or VIIA) of the Periodic Table: fluorine, chlorine, bromine, iodine, and astatine. The word comes from Greek roots meaning "salt" and "creator".

These elements are diatomic molecules in their natural form. They require one more electron to fill their outer electron shells, and so have a tendency to form a singly-charged negative ion. This negative ion is referred to as a halide ion; salts containing these ions are known as halides.

Many synthetic organic compounds, and a few natural ones, contain halogen atoms; these are known as halogenated compounds.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Northwest Harbor, New York

... family size is 3.04. In the town the population is spread out with 25.2% under the age of 18, 4.8% from 18 to 24, 27.3% from 25 to 44, 28.7% from 45 to 64, and 13.9% ...

 
 
 
This page was created in 36.2 ms