fluorine: Quick Facts

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Oct. 1, 2026

Facts

Also Known As	F

Photos and Videos

A labeled diagram of the periodic table entry for fluorine, showing its atomic number 9, symbol F, atomic weight 18.998, electron configuration, and indicating it is a halogen and a gas at room temperature.

Bohr model of a fluorine atom showing a central cluster of red and yellow spheres for protons and neutrons, with blue electrons orbiting in two rings.

A dentist holds a glass of water while a child with an exaggerated smile reclines in a dental chair. The water glass is circled, and arrows point to it.

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Topics

fluorosis chemical element halogen hydrogen carbon sodium nitrogen sulfur phosphorus boron iodine zinc oxygen

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Key People

Moissan, 1906

Henri Moissan

French chemist

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Edmond Frémy

French chemist

Periodic Table of the elements concept image (chemistry)

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Concept artwork on the periodic table of elements.

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