Atomic radius/: 2.23
Atomic volume/cm3 / mol: 23.7
Covalent radius/: 1.54
Electronic configuration: 1s2 2s2p6 3s1
Ion radius/: 1.02
Oxidation state: 1
In 1807 in London, the British scientific research institute, Humphry Davy isolated by Mr.
By electrolysis sodium chloride, borax and BingJingShi.
Used in medicine, agriculture and photography and so on, also used in the manufacture of street lamp, battery and glass, etc.
State: soft qualitative silvery white alkaline metal. Melting point (℃) : 98 boiling point (℃) : 883 density (g/cc, 300 K) : 0.971
Than hot/J/gK: 1.23 evaporation heat/KJ/mol: 96.96 melting hot/KJ/mol: 2.598
Conductive rate / 106 / cm: 0.21 coefficient of thermal conductivity/W/cmK: 1.41
Abundance retention time/year: 1 x 108
The sun (relative to the H = 1 x 1012) : 1.91 x 106 sea/P.P.M. : 10 500
The earth's crust/P.P.M. : 23 000
Atmospheric/P.P.M. (volume) :
The human body the content in liver/P.P.M. : 2000-4000
Organs: muscle/P.P.M. : 2600-7800
Blood/mg dm-3:1970 days intake/g: 2-15
Bone/P.P.M. : 10 000 people (70 Kg) are total body/g: 100
Na