Category

Calcium

Catalogue

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

Atomic structure

Atomic radius/A: 2.23 atomic volume/cm3 / mol: 29.9 covalent radius/A: 1.74

Electronic configuration: 1 2 3 4 s2p6 s2 s2p6 s2 ion radius/A: 0.99 oxidation state: 2

Discovery

By 1808 Humphry Davy (Britain, London) sir separating out.

Source

From the ore chalk, limestone, marble get, very rich, in 3.5% of the earth's crust. Only to compound form existence.

Element USES

Used for oil dehydration, iron and alloy decarburization and desulfurization, alloy additive, is bone and teeth, plant structure of the basic components.

physical property

State: silver soft metal, exposed to air, lose luster become gray. Melting point (℃) : 839 boiling point (℃) : 1484 density (g/cc, 300 K) : 1.55

Than hot/J/gK: 0.632 evaporation heat/KJ/mol: 153.6 melting hot/KJ/mol: 8.54

Conductive rate / 106 / cm: 0.298 coefficient of thermal conductivity/W/cmK: 2.01

Geological data

Abundance retention time/year: 1 x 106

The sun (relative to the H = 1 x 1012) : 2.24 x 106 sea/P.P.M.

The earth's crust/P.P.M. : 41 000 Atlantic ocean surface: 390 Pacific surface: 390

The Atlantic ocean depths: 430 deep in the Pacific: 440

Biology data

The human body the content in liver/P.P.M. : 100-360

Organs: muscle/P.P.M. : 140-700

Blood/mg dm-3:60.5 days intake/mg: 600-1400

Bone/P.P.M. : 170000 people (70 Kg) are total body/Kg: 1.00

Detailed information

Calcium/Ca