Category

Strontium

Catalogue

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

Atomic structure

Atomic radius/A: 2.45 atomic volume/cm3 / mol: 33.7 covalent radius/A: 1.91

Electronic configuration: 1 2 3 4 s2p6 s2 s2p6d10 s2p6 5 s2 ion radius/A: 1.12 oxidation state: 2

Discovery

In 1790, a. Crawford (Scotland, Edinburgh) think sr is an element, 1808, by Humphry Davy (Britain, London) separating out.

Source

Exist in mineral lapis lazuli (celestite) and rhombohedrons strontium mine (strontianite).

Element USES

Used for fireworks, with the red flame. Also used in nuclear batteries.

physical property

State: soft silver yellow metal. Melting point (℃) : 769 boiling point (℃) : 1384 density (g/cc, 300 K) : 2.54

Than hot/J/gK: 0.3 evaporation heat/KJ/mol: 144 melting hot/KJ/mol: 8.3

Conductive rate / 106 / cm: 0.0762 coefficient of thermal conductivity/W/cmK: 0.353

Geological data

Abundance retention time/year: 4 by 106

The sun (relative to the H = 1 x 1012) : 790 P.P.M/in sea water.

The earth's crust/P.P.M. : the Atlantic ocean surface: 7.6 the Pacific Ocean surface: 7.6

Atmospheric/P.P.M. (volume) : the Atlantic ocean depths: 7.7 the depths of the Pacific Ocean: 7.7

Biology data

The human body the content in liver/P.P.M. : 0.05-0.36

Organs: muscle/P.P.M. : 0.12-0.35

Blood/mg dm-3:0.031 days intake/mg: 0.8-5

Bone/P.P.M. : 36-140 people (70 Kg) are total body/mg: 320

Detailed information

Strontium/Sr