Флуор

9
F
Група
17
Периода
2
блок
p
Protons
Electrons
Neutrons
9
9
10
Општи Својства
Атомски број
9
Атомска тежина
18,9984032
Mass Number
19
Category
Халогени
Color
Colorless
Radioactive
Не
From the Latin and French fluere, flow or flux
Кристална структура
Base Centered Monoclinic
History
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
Електронска конфигурација
[He] 2s2 2p5
F
Fluorine reacts violently with water to produce oxygen
Физички Својства
Фаза
Gas
Густина
0,001696 g/cm3
Точка на топење
53,53 K | -219,62 °C | -363,32 °F
Точка на вриење
85,03 K | -188,12 °C | -306,62 °F
Топлина на топење
0,26 kJ/mol
Топлина на испарување
3,27 kJ/mol
Specific Heat Capacity
0,824 J/g·K
Abundance in Earth's crust
0,054%
Abundance in Universe
0,00004%
Fluorine
Кредити на слика: Images-of-elements
Fluorine gas, but only as photomontage, because fluorine reacts even with glass
CAS Number
7782-41-4
PubChem CID Number
24524
Атомски Својства
Атомски полупречник
42 pm
Ковалентен полупречник
64 pm
Електронегативност
3,98 (Полингова скала)
Ionization Potential
17,4228 eV
Atomic Volume
17,1 cm3/mol
Thermal Conductivity
0,000279 W/cm·K
Oxidation States
-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