Category

Cerium

Catalogue

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

Atomic structure

Atomic radius/A: 2.7
Atomic volume/cm3 / mol: 20.67
Electronic configuration: 1 2 3 4 s2p6 s2 s2p6d10 s2p6d10f1 5 s2p6d1 6 s2
Ion radius/A: 1.034
Covalent radius/A: 1.65 oxidation state: 3, 4

Discovery

1803 by J.J. Berzelius and w. Hisinger (Sweden, Vestmanland) found.

Source

The most abundant rare earth metal, exists in monazite [Ce (PO4)] that many minerals.

Element USES

Used to heat resistant alloy.

physical property

State: soft gray rare earth metal.

Melting point (℃) : 798
Boiling point (℃) : 3426
Density (g/cc, 300 K) : 6.77


Than hot/J/gK: 0.19
Evaporation heat/KJ/mol: 414
Melting hot/KJ/mol: 5.46


Conductive rate / 106 / cm: 0.0115
Thermal conductivity is

Geological data

abundance
Retention time/year: 100

The sun (relative to the H = 1 x 1012) : 35.5 sea/P.P.M. :
The earth's crust/P.P.M. : the Atlantic ocean surface: 9.0 x 10-6 Pacific surface: 1.5 x 10-6
Atmospheric/P.P.M. (volume) : the Atlantic ocean depths: 2.6 x 10-6 deep in the Pacific: 0.5 x 10-6

Biology data

Content in the human body
Liver/P.P.M. : 0.29
Organs: muscle/P.P.M. : unknown
Blood/mg dm-3: < 0.002 days intake/mg: unknown, but very low.
Bone/P.P.M. : 2.7 (70 Kg) are total body/mg: 40

Detailed information

Cerium/Ce