Klor

17
Cl
Gruppe
17
Periode
3
Blokk
p
Protons
Electrons
Neutrons
17
17
18
Generelle eigenskapar
Atomnummer
17
Atommasse
35,453
Mass Number
35
Kategori
Halogen
Farge
Gul
Radioactive
Nei
From the Greek word chloro, greenish yellow
Krystallstruktur
Base Centered Orthorhombic
Historie
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.
Elektron per energinivå
2, 8, 7
Elektronkonfigurasjon
[Ne] 3s2 3p5
Cl
Tree frogs have a chlorine compound in their skin that is a very powerful pain killer
Fysiske eigenskapar
Tilstandsform
Gass
Tettleik
0,003214 g/cm3
Smeltepunkt
171,65 K | -101,5 °C | -150,7 °F
Kokepunkt
239,11 K | -34,04 °C | -29,27 °F
Smeltevarme
3,2 kJ/mol
Fordampingsvarme
10,2 kJ/mol
Spesifikk varmekapasitet
0,479 J/g·K
Abundance in Earth's crust
0,017%
Abundance in Universe
0,0001%
Pure
Image Credits: Images-of-elements
Pure liquid chlorine under a pressure of 8 bars
CAS Number
7782-50-5
PubChem CID Number
24526
Atom eigenskapar
Atomradius
79 pm
Kovalent radius
102 pm
Elektronegativitet
3,16 (Paulings skala)
Ioniseringspotensial
12,9676 eV
Molart volum
22,7 cm3/mol
Termisk konduktivitet
0,000089 W/cm·K
Oksidasjonstrinn
-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
Isotopes
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