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Lithium fluoride is an inorganic compound with the chemical formula LiF. It is a colorless solid that transitions to white with decreasing crystal size. It is a colorless solid that transitions to white with decreasing crystal size.
At room temperature, fluorine is a gas of diatomic molecules, [5] pale yellow when pure (sometimes described as yellow-green). [42] It has a characteristic halogen-like pungent and biting odor detectable at 20 ppb. [43]
The direct reaction of hydrocarbons with fluorine gas can be dangerously reactive, so the temperature may need to be lowered even to −150 °C (−240 °F). [115] " Solid fluorine carriers", compounds that can release fluorine upon heating, notably cobalt trifluoride , [ 116 ] may be used instead, or hydrogen fluoride.
Among alkaline-earth fluorides, barium-tin fluoride (BaSnF 4) has been investigated because of its relatively high ionic conductivity at room temperature, on the order of 10 −4 S cm −1. Despite the increased ionic conductivity, the low electrochemical stability window of Sn 2+ prevents the use of reducing metals as anodes, decreasing the ...
Lithium, sodium, and potassium are the only three metals in the periodic table that are less dense than water: [5] in fact, lithium is the least dense known solid at room temperature. [ 10 ] : 75
It is barely reactive under normal conditions, except for attack by fluorine, [242] and has a melting point of 2076 °C (cf. steel ~1370 °C). [243] Boron is a semiconductor; [244] its room temperature electrical conductivity is 1.5 × 10 −6 S•cm −1 [245] (about 200 times less than that of tap water) [246] and it has a band gap of about 1 ...
At room temperature and 350 MPa helium is included into CaZrF 6 to expand its unit cell ... at 649 °C lithium can take 5 parts per ... 5 and atomic fluorine. [69]
Lithium is the first alkali metal in the periodic table, [note 1] and the first metal of any kind in the periodic table. [note 2] At standard temperature and pressure, lithium is a soft, silver-white, highly reactive metal. With a density of 0.564 g⋅cm −3, lithium is the lightest metal and the least dense solid element. [6]