Category

Cobalt

Catalogue

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

Atomic structure

Atomic radius/A: 1.67 atomic volume/cm3 / mol: 6.7 covalent radius/A: 1.16

Electronic configuration: 1 2 3 4 s2p6 s2 s2p6d7 s2 ion radius/A: 0.745 oxidation state: 2, 3

Discovery

1735 by Georg Brandt (Stockholm, Sweden) found.

Source

With arsenic, oxygen and sulfur compounds exist in nature, such as: fai arsenic cobalt ore [cobaltine (CoAsS)] and linneite (Co3S4).

Element USES

Used for hard alloy, the magnet, ceramics and special glass, also used for permanent magnet and razor manufacturing, cobalt 60 with cancer of the radiation therapy.

physical property

State: hard silvery white transition metal. Melting point (℃) : 1495 boiling point (℃) : 2870 density (g/cc, 300 K) : 8.9

Than hot/J/gK: 0.42 evaporation heat/KJ/mol: 376.5 melting hot/KJ/mol: 16.19

Conductive rate / 106 / cm: 0.172 coefficient of thermal conductivity/W/cmK: 1

Geological data

Abundance retention time/year: 40

The sun (relative to the H = 1 x 1012) : 7.94 x 104 sea/P.P.M.

The earth's crust/P.P.M. : 20 the Atlantic ocean surface: Pacific surface: 6.9 x 10-6

Atmospheric/P.P.M. (volume) : the Atlantic ocean depths: deep in the Pacific: 1.1 x 10-6

Biology data

The human body the content in liver/P.P.M. : 0.06-1.1

Organs: muscle/P.P.M. : 0.28-0.65

Blood/mg dm-3:0.0002-0.04 days intake/mg: 0.005-1.8

Bone/P.P.M. : 0.01 0.04 (70 Kg) are total body/mg: 3

Detailed information

Cobalt/Co