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Fluorine - Data tables and historic information.
Wikipedia: Fluorine - Properties of the element, including its history, applications, and characteristics.
Visual Elements: Fluorine - General and physical information, source, uses, key isotopes, and ionisation energies.
Fluorine Notes - Russian online journal devoted to fluorine chemistry.
Fluorine, Hydrogen Fluoride, and Fluorides - Low levels of fluorides can help prevent dental cavities. At high levels, fluorides can result in tooth and bone damage. Hydrogen fluoride and fluorine are naturally-occurring gases that are very irritating to the skin, eyes, and respiratory tract.
Lenntech: Fluorine - Physical data, chemical properties, health and environmental effects.
WebElements: Fluorine - Extensive information on history, uses, occurrence, compounds, and properties of the element.
EnvironmentalChemistry.com: Fluorine - Atomic structure, chemical and physical properties, and table of nuclides.
Changshu 3F Fluorochemical Industry Co., Ltd. - Producter of fluorinated hydrocarbons, including HCFCs, HFCs for refrigerant applications, and a range of fluorinated specialties.
Huasen Chemical Company Ltd. - Producer of hydrogen fluoride and fluorinated organics in China. Products include fluorinated acetic acid and its esters and amides.

Covalent radius of fluorine - The covalent radius of fluorine is a measure of the size of a fluorine atom, which is approximated at about 60 pm. However, the covalent radius of fluorine is a difficult value to measure for several reasons.
Fluorine deficiency - Fluoride or fluorine deficiency is a medical condition in which a human, or other organism lacks the necessary compounds containing fluorine to keep bones and teeth healthy. The extent to which the condition truly exists, and its relationship to fluoride poisoning has arisen some controversy.
Fluorine absorption dating - Fluorine absorption dating is the use of fluorine to determine the duration of time an object found in the soil has been there. It is a relative dating technique, in comparison to absolute dating techniques like radiocarbon dating.
Fluorine-18 - Fluorine-18 is a fluorine radioisotope which is an important source of positrons. It has a mass of 18.
Quartz Fluorine Tube - Quartz Fluorine Vessel Fluorine is the most reactive and electronegative substance known to man, therefore specialized containers must be prepared to hold and view the gas. The preparation of these vessels is delicate and labor intensive, but well worth the time.