Category

Rhodium

Catalogue

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

Atomic structure

Atomic radius/A: 1.83
Atomic volume/cm3 / mol: 8.3
Electronic configuration: 1 2 3 4 s2p6 s2 s2p6d10 s2p6d8 5 s1
Ion radius/A: 0.68
Covalent radius/A: 1.25 oxidation state: 2 and 4

Discovery

1803 by W.H. Wollaston (London) found.

Source

By nickel production for the by-product.

Element USES

Used for high quality of scientific instruments to prevent grind paint, rhodium platinum alloys used in the production of thermocouples. Also used in car headlights reflector, telephone Repeaters, GangBiJian, etc.

physical property

State: hard silvery metal.

Melting point (℃) : 1966
Boiling point (℃) : 3727
Density (g/cc, 300 K) : 12.41


Than hot/J/gK: 0.242
Evaporation heat/KJ/mol: 493
Melting hot/KJ/mol: 21.5


Conductive rate / 106 / cm: 0.211

Geological data

abundance
Retention time/year:

The sun (relative to the H = 1 x 1012) : 25.1 sea/P.P.M. : unknown, but very few.
The earth's crust/P.P.M. : c. 2 x 10-4 the Atlantic ocean surface: Pacific surface:
Atmospheric/P.P.M. (volume) : the Atlantic ocean depths: deep in the Pacific:

Biology data

Content in the human body
Liver/P.P.M. :
Organs: unknown, but very low. Muscle/P.P.M. :
Blood/mg dm-3: th intake/mg: unknown
Bone/P.P.M. : people (70 Kg) are total body/mg: unknown

Detailed information

Rhodium/Rh