Category

Potassium

Catalogue

Atomic structure
Discovery
Source
Element USES
physical property
Chemical property
Geological data
Biology data

Atomic structure

The son radius/A: 2.77 atomic volume/cm3 / mol: 45.46 covalent radius/A: 2.03

Electronic configuration: 1 2 3 4 s2p6 s2 s2p6 s1 ion radius/A: 1.38 oxidation state: 1

Discovery

1807, by Humphry Davy (Britain, London) sir separating out.

Source

GuangLuShi (carnallite by mineral, KMgCl3.6 H2O and potassium (sylvite, KCL) exist in nature.

Element USES

To potash, can be used for glass, soap, the camera, salt to replace product, in order to XiaoShi and potassium nitrate, can be used to make explosives and fireworks, etc.

physical property

Conditions: very soft silver metal. Melting point (℃) : 63.35 the boiling point (℃) : 759 density (g/cc, 300 K) : 0.862

Than hot/J/gK: 0.75 evaporation heat/KJ/mol: 79.87 melting hot/KJ/mol: 2.334

Conductive rate / 106 / cm: 0.139 coefficient of thermal conductivity/W/cmK: 1.024

Geological data

Abundance retention time/year: 5 x 106

The sun (relative to the H = 1 x 1012) : 1.45 x 105 sea/P.P.M. :

The earth's crust/P.P.M. : 21000

Biology data

The human body the content in liver/P.P.M. : 16000

Organs: muscle/P.P.M. : 16000

Blood/mg dm-3:1620 days intake/mg: 1400-1700

Bone/P.P.M. : 2100 people (70 Kg) are total body/g: 140

Detailed information

Potassium/K