Klor

17
Cl
Grupp
17
Period
3
Block
p
Protoner
Elektroner
Neutroner
17
17
18
Generella Egenskaper
Atomnummer
17
Atommassa
35,453
Masstal
35
Kategori
Halogener
Färg
Gul
Radioaktiv
Nej
From the Greek word chloro, greenish yellow
Kristallstruktur
Bascentrerat ortorombiskt
Historia
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 per 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
Fysikaliska Egenskaper
Aggregationstillstånd
Gasformig
Densitet
0,003214 g/cm3
Smältpunkt
171,65 K | -101,5 °C | -150,7 °F
Kokpunkt
239,11 K | -34,04 °C | -29,27 °F
Smältvärme
3,2 kJ/mol
Ångbildningsvärme
10,2 kJ/mol
Specifik värmekapacitet
0,479 J/g·K
Abundance in Earth's crust
0,017%
Abundance in Universe
0,0001%
Pure
Bildkrediter: Images-of-elements
Pure liquid chlorine under a pressure of 8 bars
CAS Number
7782-50-5
PubChem CID Number
24526
Atomära Egenskaper
Atomradie
79 pm
Kovalent radie
102 pm
Elektronegativitet
3,16 (Paulingskalan)
Jonisationspotential
12,9676 eV
Molvolym
22,7 cm3/mol
Värmeledningsförmåga
0,000089 W/cm·K
Oxidationstillstånd
-1, 1, 2, 3, 4, 5, 6, 7
Användningsområden
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
Stabila isotoper
35Cl, 37Cl
Instabila isotoper
28Cl, 29Cl, 30Cl, 31Cl, 32Cl, 33Cl, 34Cl, 36Cl, 38Cl, 39Cl, 40Cl, 41Cl, 42Cl, 43Cl, 44Cl, 45Cl, 46Cl, 47Cl, 48Cl, 49Cl, 50Cl, 51Cl