Category

Manganese

Catalogue

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

Atomic structure

Atomic radius/A: 1.79 atomic volume/cm3 / mol: 1.39 covalent radius/A: 1.17

Electronic configuration: 1 2 3 4 s2p6 s2 s2p6d5 s2 ion radius/A: 0.46 oxidation state: 7,6,4,2,3

Discovery

In 1744, by J.G. Gahn (Stockholm, Sweden) separating out.

Source

The most abundant mineral is soft manganese ore {pyrolusite (MnO2)}, and hard manganese ore {psilomelane [(BaH2O) 2 Mn5O10]} and rhodochrosite {rhodochrosite (MnCO3)}.

Element USES

Used in the manufacture of steel, battery, ceramics, etc.

physical property

State: silver grey transition metal. Melting point (℃) : 1244 boiling point (℃) : 1962 density (g/cc, 300 K) : 7.43

Than hot/J/gK: 0.48 evaporation heat/KJ/mol: 226 melting hot/KJ/mol: 12.05

Conductive rate / 106 / cm: 0.00695 coefficient of thermal conductivity/W/cmK: 0.0782

Geological data

Abundance retention time/year: 50

The sun (relative to the H = 1 x 1012) : 2.63 x 105 sea/P.P.M.

The earth's crust/P.P.M. : the Atlantic ocean surface: 1.0 x 10-4 Pacific surface: 1.0 x 10-4

Atmospheric/P.P.M. (volume) : the Atlantic ocean depths: 0.96 x 10-4 deep in the Pacific: 0.4 x 10-4

Biology data

The human body the content in liver/P.P.M. : 3.6-9.6

Organs: muscle/P.P.M. : 0.2-2.3

Blood/mg dm-3:0.0016-0.075 days intake/mg: 0.4-10

Bone/P.P.M. : 0.2-100 people (70 Kg) are total body/mg: 12

Detailed information

Manganese/Mn