Chlor

17
Cl
Gruppe
17
Periode
3
Block
p
Protonen
Elektronen
Neutronen
17
17
18
Generelle Eigenschaften
Ordnungszahl
17
Atommasse
35,453
Massenzahl
35
Kategorie
Halogene
Farbe
Gelb
Radioaktiv
Nein
From the Greek word chloro, greenish yellow
Kristallstruktur
Orthorhombisch basiszentriert
Geschichte
Around 1630, chlorine was recognized as a gas by the Belgian chemist and physician Jan Baptist van Helmont.

Elemental chlorine was first prepared and studied in 1774 by Swedish chemist Carl Wilhelm Scheele.

By 1810, the scientific consensus was that chlorine was actually a compound that contained oxygen.

In 1811, Sir Humphry Davy concluded the new gas was in fact a new element.
Elektronen pro Schale
2, 8, 7
Elektronenkonfiguration
[Ne] 3s2 3p5
Cl
Tree frogs have a chlorine compound in their skin that is a very powerful pain killer
Physikalische Eigenschaften
Aggregatzustand
Gasförmig
Dichte
0,003214 g/cm3
Schmelzpunkt
171,65 K | -101,5 °C | -150,7 °F
Siedepunkt
239,11 K | -34,04 °C | -29,27 °F
Schmelzwärme
3,2 kJ/mol
Verdampfungswärme
10,2 kJ/mol
Spezifische Wärmekapazität
0,479 J/g·K
Häufigkeit in der Erdkruste
0,017%
Häufigkeit im Universum
0,0001%
Pure
Danksagungen für Bilder: Images-of-elements
Pure liquid chlorine under a pressure of 8 bars
CAS-Nummer
7782-50-5
PubChem CID Number
24526
Atomeigenschaften
Atomradius
79 pm
Kovalenter Radius
102 pm
Elektronegativität
3,16 (Pauling-Skala)
Ionisierungsenergie
12,9676 eV
Molares Volumen
22,7 cm3/mol
Wärmeleitfähigkeit
0,000089 W/cm·K
Oxidationszustände
-1, 1, 2, 3, 4, 5, 6, 7
Anwendung
Chlorine is used for producing safe drinking water.

It is also extensively used in the production of paper products, dyestuffs, textiles, petroleum products, medicines, antiseptics, insecticides, food, solvents, paints, plastics, and many other consumer products.

Chlorinated compounds are used mostly for sanitation, pulp bleaching, disinfectants, and textile processing.
Elemental chlorine at high concentrations is extremely dangerous and poisonous
Isotope
Stabile Isotope
35Cl, 37Cl
Instabile Isotope
28Cl, 29Cl, 30Cl, 31Cl, 32Cl, 33Cl, 34Cl, 36Cl, 38Cl, 39Cl, 40Cl, 41Cl, 42Cl, 43Cl, 44Cl, 45Cl, 46Cl, 47Cl, 48Cl, 49Cl, 50Cl, 51Cl