Electronic data		Thermal data		Steric data
Shells: 2,7 Orbitals: [He] 2s2 2p5 Electronegativity: 4.1, 4.0 1. Ionization potential: 17.4228 eV 2. Ionization potential: 34.97 eV 3. Ionization potential: 62.707 eV Oxidation states: -1 Electrical conductivity: --		Melting point: -219.62 °C Boiling point: -188.14 °C Specific heat: 0.82 J/gK Heat of fusion: 0.2552 kJ/mol Heat of vaporization: 3.2698 kJ/mol Thermal conductivity: 0.000279 W/cmK		Atomic radius: 0.57 Å Ionic radius: 1.33 Å () Covalent radius: 0.72 Å Atomic volume: 12.6 cm³/mol Density (293 K): 0.001696 g/cm³ Crystal structure: Cubic

Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
18F	0	18	1	1.830h	+,EC	View
19F	100	18.9984	1/2	--	stable	--

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Name origin:	Latin: fluere (flow)
Description:	Greenish-yellow, pungent, corrosive gas. Extremely reactive. Does not occur uncombined in nature.
Discovered by:	Henri Moissan
Year:	1886
Place:	France
Sources:	Found in the minerals fluorite (CaF2) and cryolite(Na3AlF6). Electrolysis of hydrofluoric acid (HF) or potassium acid fluoride (KHF2) is the only practical method of commercial production.
Use(s):	Used in refrigerants and other fluorocarbons. Also in toothpaste as sodium fluoride (NaF) and stannous fluoride (SnF2); also in Teflon.