Klor

17
Cl
Gruppe
17
Periode
3
Blok
p
Protons
Electrons
Neutrons
17
17
18
General Properties
Atomnummer
17
Atommasse
35,453
Mass Number
35
Kategori
Halogener
Farve
Gul
Radioactive
Nej
From the Greek word chloro, greenish yellow
Krystalstruktur
Endecentreret Orthohombisk
History
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.
Elektroner i hver skal
2, 8, 7
Elektronkonfiguration
[Ne] 3s2 3p5
Cl
Tree frogs have a chlorine compound in their skin that is a very powerful pain killer
Physical Properties
Tilstandsform
Gas
Massefylde
0,003214 g/cm3
Smeltepunkt
171,65 K | -101,5 °C | -150,7 °F
Kogepunkt
239,11 K | -34,04 °C | -29,27 °F
Smeltevarme
3,2 kJ/mol
Fordampningsvarme
10,2 kJ/mol
Varmefylde
0,479 J/g·K
Abundance in Earth's crust
0,017%
Abundance in Universe
0,0001%
Pure
Billede akkrediteringer: Images-of-elements
Pure liquid chlorine under a pressure of 8 bars
CAS Number
7782-50-5
PubChem CID Number
24526
Atomic Properties
Atomradius
79 pm
Kovalent radius
102 pm
Elektronegativitet
3,16 (Paulings skala)
Ionization Potential
12,9676 eV
Atomic Volume
22,7 cm3/mol
Varmeledningsevne
0,000089 W/cm·K
Oxidationstrin
-1, 1, 2, 3, 4, 5, 6, 7
Applications
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
Isotoper
Stable Isotopes
35Cl, 37Cl
Unstable Isotopes
28Cl, 29Cl, 30Cl, 31Cl, 32Cl, 33Cl, 34Cl, 36Cl, 38Cl, 39Cl, 40Cl, 41Cl, 42Cl, 43Cl, 44Cl, 45Cl, 46Cl, 47Cl, 48Cl, 49Cl, 50Cl, 51Cl