Fluorine

Fluorine (from L. fluere, meaning "to flow"), is the chemical element in the periodic table that has the symbol F and atomic number 9. It is a poisonous pale yellow-green, univalent gaseous halogen that is the most chemically reactive and electronegative of all the elements. In its pure form, it is highly dangerous, causing severe chemical burns on contact with skin.

Related Topics:
Chemical element - Periodic table - Atomic number - Poison - Yellow - Green - Univalent - Halogen - Electronegative

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