Fluor
9
F
Gruppe
17
Periode
2
Blokk
p
Protons
Electrons
Neutrons
9
9
10
Generelle eigenskapar
Atomnummer
9
Atommasse
18,9984032
Mass Number
19
Kategori
Halogen
Farge
Fargelaus
Radioactive
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.
Elektron per energinivå
2, 7
Elektronkonfigurasjon
[He] 2s2 2p5
Fluorine reacts violently with water to produce oxygen
Fysiske eigenskapar
Tilstandsform
Gass
Tettleik
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
Fordampingsvarme
3,27 kJ/mol
Spesifikk varmekapasitet
0,824 J/g·K
Abundance in Earth's crust
0,054%
Abundance in Universe
0,00004%
Image Credits: Images-of-elements
Fluorine gas, but only as photomontage, because fluorine reacts even with glass
CAS Number
7782-41-4
PubChem CID Number
24524
Atom eigenskapar
Atomradius
42 pm
Kovalent radius
64 pm
Elektronegativitet
3,98 (Paulings skala)
Ioniseringspotensial
17,4228 eV
Molart volum
17,1 cm3/mol
Termisk konduktivitet
0,000279 W/cm·K
Oksidasjonstrinn
-1
Applications
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
Isotopes
Stable Isotopes
19FUnstable Isotopes
14F, 15F, 16F, 17F, 18F, 20F, 21F, 22F, 23F, 24F, 25F, 26F, 27F, 28F, 29F, 30F, 31F