Fluor
9
F
Gruppe
17
Periode
2
Blokk
p
Protoner
Elektroner
Nøytroner
9
9
10
Generelle egenskaper
Atomnummer
9
Atomvekt
18,9984032
Massetall
19
Kategori
Halogener
Farge
Fargeløs
Radioaktiv
Nei
From the Latin and French fluere, flow or flux
Krystallstruktur
Base Centered Monoclinic
Historie
In 1529, Georigius Agricola described the use of fluorspar as a flux.
In 1670 Heinrich Schwandhard found that glass was etched when exposed to fluorspar treated with acid.
In 1810, French scientist Andre-Marie Ampere proposed that fluoric acid was a compound of hydrogen with a new element.
The element was finally isolated in 1886 by Henri Moissan.
In 1670 Heinrich Schwandhard found that glass was etched when exposed to fluorspar treated with acid.
In 1810, French scientist Andre-Marie Ampere proposed that fluoric acid was a compound of hydrogen with a new element.
The element was finally isolated in 1886 by Henri Moissan.
Elektroner per energinivå
2, 7
Elektronkonfigurasjon
[He] 2s2 2p5
Fluorine reacts violently with water to produce oxygen
Fysikalske egenskaper
Fase
Gass
Tetthet
0,001696 g/cm3
Smeltepunkt
53,53 K | -219,62 °C | -363,32 °F
Kokepunkt
85,03 K | -188,12 °C | -306,62 °F
Smeltevarme
0,26 kJ/mol
Fordampningsvarme
3,27 kJ/mol
Spesifikk varmekapasitet
0,824 J/g·K
Forekomst i jordskorpa
0,054%
Forekomst i universet
0,00004%
Bildekreditter: Images-of-elements
Fluorine gas, but only as photomontage, because fluorine reacts even with glass
CAS Number
7782-41-4
PubChem CID Number
24524
Atomegenskaper
Atomradius
42 pm
Kovalent radius
64 pm
Elektronegativitet
3,98 (Pauling-skalaen)
Ioniseringsenergi
17,4228 eV
Molart volum
17,1 cm3/mol
Termisk ledningsevne
0,000279 W/cm·K
Oksidasjonstilstander
-1
Bruksområder
Compounds of fluorine, including sodium fluoride, are used in toothpaste and in drinking water to prevent dental cavities.
Hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs) now serve as replacements for CFC refrigerants.
Fluorine and its compounds are used in processing nuclear fuel.
Hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs) now serve as replacements for CFC refrigerants.
Fluorine and its compounds are used in processing nuclear fuel.
Fluorine is highly toxic and corrosive
Isotoper
Stabile isotoper
19FUstabile isotoper
14F, 15F, 16F, 17F, 18F, 20F, 21F, 22F, 23F, 24F, 25F, 26F, 27F, 28F, 29F, 30F, 31F