Category

Europium

Catalogue

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

Atomic structure

Atomic radius/A: 2.56
Atomic volume/cm3 / mol: 28.9
Electronic configuration: 1 2 3 4 s2p6 s2 s2p6d10 s2p6d10f7 5 s2p6 6 s2
Ion radius/A: 0.947
Covalent radius/A: 1.85 oxidation state: 3, 2

Discovery

1901 by E.A. Demar cay (Paris, France) found.

Source

No

Element USES

And yttrium oxide together, used in the manufacture of red phosphors color TV sets.

physical property

State: soft, silver rare earth metal.

Melting point (℃) : 822
Boiling point (℃) : 1597
Density (g/cc, 300 K) : 5.24


Than hot/J/gK: 0.18
Evaporation heat/KJ/mol: 143.5
Melting hot/KJ/mol: 9.21


Conductive rate / 106 / cm: 0.0112
Coefficient of thermal conductivity/W/cmK: 0.139

Geological data

abundance
Retention time/year: 500

The sun (relative to the H = 1 x 1012) : five sea/P.P.M. :
The earth's crust/P.P.M. : 2.1 the Atlantic ocean surface: 0.9 x 10-seven Pacific surface: 1.0 x 10-seven
Atmospheric/P.P.M. (volume) : the Atlantic ocean depths: 1.5 x 10-seven deep in the Pacific: 2.7 x 10-seven

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, but very low.

Detailed information

Europium/Eu