Хлор

17
Cl
Група
17
Периода
3
блок
p
Protons
Electrons
Neutrons
17
17
18
Општи Својства
Атомски број
17
Атомска тежина
35,453
Mass Number
35
Category
Халогени
Color
Yellow
Radioactive
Не
From the Greek word chloro, greenish yellow
Кристална структура
Base Centered Orthorhombic
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.
Electrons per shell
2, 8, 7
Електронска конфигурација
[Ne] 3s2 3p5
Cl
Tree frogs have a chlorine compound in their skin that is a very powerful pain killer
Физички Својства
Фаза
Gas
Густина
0,003214 g/cm3
Точка на топење
171,65 K | -101,5 °C | -150,7 °F
Точка на вриење
239,11 K | -34,04 °C | -29,27 °F
Топлина на топење
3,2 kJ/mol
Топлина на испарување
10,2 kJ/mol
Specific Heat Capacity
0,479 J/g·K
Abundance in Earth's crust
0,017%
Abundance in Universe
0,0001%
Pure
Кредити на слика: Images-of-elements
Pure liquid chlorine under a pressure of 8 bars
CAS Number
7782-50-5
PubChem CID Number
24526
Атомски Својства
Атомски полупречник
79 pm
Ковалентен полупречник
102 pm
Електронегативност
3,16 (Полингова скала)
Ionization Potential
12,9676 eV
Atomic Volume
22,7 cm3/mol
Thermal Conductivity
0,000089 W/cm·K
Oxidation States
-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