Fluorine

  • (noun): A nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite.
    Synonyms: F, atomic number 9

Some articles on fluorine:

Carbon–fluorine Bond - Bond Length
... The carbon–fluorine bond length is typically about 1.35 ångström (1.39 Å in fluoromethane) ... carbon–nitrogen and carbon–oxygen bonds, despite fluorine having a larger atomic mass ... to the ionic character/electrostatic attractions between the partial charges on carbon and fluorine ...
Perfluorinated Compounds
... compound with all hydrogens replaced by fluorine on a carbon chain—but the molecule also contains at least one different atom or functional group ... to fluorocarbons (a wholly carbon and fluorine containing compound) as they are fluorocarbon derivatives ... processes due to the strength of the carbon–fluorine bond ...
Carbon–fluorine Bond - Spectroscopy
... The carbon–fluorine bond stretching appears in the infrared spectrum between 1000 and 1360 cm−1 ... compounds have a strong band between 1000 and 1110 cm−1 with more than one fluorine atoms, the band splits into two bands, one for the symmetric mode and one for the asymmetric ... The carbon–fluorine bands are so strong that they may obscure any carbon–hydrogen bands that might be present ...
Carbon–fluorine Bond - Electronegativity and Bond Strength
... The high electronegativity of fluorine (4.0 for F vs. 2.5 for carbon) gives the carbon–fluorine bond a significant polarity/dipole moment ... The electron density is concentrated around the fluorine, leaving the carbon relatively electron poor ...