Fluor

9
F
Skupina
17
Perioda
2
Blok
p
Protons
Electrons
Neutrons
9
9
10
General Properties
Vrstno število
9
Atomska teža
18,9984032
Mass Number
19
Kategorija
Halogeni
Barva
Brezbarven
Radioactive
Ne
From the Latin and French fluere, flow or flux
Kristalna struktura
Centrirana monoklinska
Zgodovina
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.
Electrons per shell
2, 7
Razporeditev elektronov
[He] 2s2 2p5
F
Fluorine reacts violently with water to produce oxygen
Physical Properties
Faza snovi
Plin
Gostota
0,001696 g/cm3
Tališče
53,53 K | -219,62 °C | -363,32 °F
Vrelišče
85,03 K | -188,12 °C | -306,62 °F
Talilna toplota
0,26 kJ/mol
Izparilna toplota
3,27 kJ/mol
Toplotna kapaciteta
0,824 J/g·K
Abundance in Earth's crust
0,054%
Abundance in Universe
0,00004%
Fluorine
Zasluge za slike: Images-of-elements
Fluorine gas, but only as photomontage, because fluorine reacts even with glass
CAS Number
7782-41-4
PubChem CID Number
24524
Atomic Properties
Atomski polmer
42 pm
Kovalentni polmer
64 pm
Elektronegativnost
3,98 (Paulingova lestvica)
Ionization Potential
17,4228 eV
Atomic Volume
17,1 cm3/mol
Toplotna prevodnost
0,000279 W/cm·K
Oksidacijska stanja
-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.
Fluorine is highly toxic and corrosive
Isotopes
Stable Isotopes
19F
Unstable Isotopes
14F, 15F, 16F, 17F, 18F, 20F, 21F, 22F, 23F, 24F, 25F, 26F, 27F, 28F, 29F, 30F, 31F