Fluorine is the chemical element in the periodic table that has the symbol F and atomic number 9.
Atomic fluorine is univalent and is the most chemically reactive and electronegative of all the elements.
In its pure form, it is a poisonous, pale, yellow-green gas, with chemical formula F2.
Like other halogens, molecular fluorine is highly dangerous; it causes severe chemical burns on contact with skin..
For more information about the topic Fluorine, read the full article at Wikipedia.org, or see the following related articles:
Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Fluorine at Wikipedia.org. See the Wikipedia copyright page for more details.

