Fluorine
Kwun Tong Government Secondary School
Chemistry
3A Iris Lai Yat Yi(09)
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Name: Fluorine
Symbol:
b l F
Group: VII
Period: 2
Atomic no.: 9
Type: Halogen
Atomic weight: 18.998403
Atomic volume: 17.1 cm3/mol
D i @ 293 K 0.001696 g/cm
Density @ 293 K:
0 001696 / 3
Discovered by: Moissan in 1886 •
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Structure: cubic crystals in solid phase
H d
h
Hardness:
mohs
Color: pale yellow
Harmful effects: Fluorine is highly toxic and corrosive.
Characteristics:
*Fluorine is the most reactive and the most electronegative of all the elements.
-Video of reaction in Fluorine and elements of period 2(Na, Mg, Al, Si, P, S, Cl,Ar)
http://www.youtube.com/watch?v=RkomnTbPLNc&feature=player_embedded
-Video of reaction in Fluorine and Hydrogen
http://www.youtube.com/watch?v=d2zP4jxTL4s&feature=related
*Fluorine is a pale yellow, diatomic, highly corrosive, flammable gas,
with a pungent odor
odor. It is the lightest halogen.
halogen
*It reacts violently with water to produce oxygen and the extremely
corrosive hydrofluoric acid.
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Fluorine and its compounds - mostly uranium hexafluoride
- are used in processing nuclear fuel.
Fluorochemicals, including many high-temperature
plastics such as Teflon, are also made using fluorine.
Compounds of fluorine, including sodium fluoride, are
used in toothpaste and in drinking water to prevent
dental cavities.
H d fl i acid
Hydrofluoric
id can dissolve
di l glass
l andd is
i usedd to
t etch
t h
the glass in light bulbs and in other products.
Fluorine is essential for the maintenance of solidity
y of
our bones
fluorinated compounds is in purification of public water
supplies This has shown to reduce the incidence of dental
supplies.
carries and other dental problems greatly.
• Pictures by
- http://annales.org/archives/x/moissan.html
http://annales org/archives/x/moissan html
- Chemical Engineering
http://www.chemical-engineering.co
p room of chemistry
y
- Filip’s
http://filipchsqroom.blogspot.com
-BENJAMIN-MILLS.com
http://www.benjamin-mills.com/
p
j
- http://periodictable.com/Elements/009/index.html
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Information by
-Lenntech
Lenntech – Water Treatment Solusions
http://www.lenntech.com
-Chemicool
http://www.chemicool.com
Video by YouTube