Category

Samarium

Catalogue

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

Atomic structure

Atomic radius/A: 2.59
Atomic volume/cm3 / mol: 19.95
Electronic model
Electronic configuration: 1 2 3 4 s2p6 s2 s2p6d10 s2p6d10f6 5 s2p6 6 s2
Ion radius/A: 0.964

Covalent radius/A: 1.62 oxidation state: 3.

Discovery

1879 by P.E. Lecoq DE Boisbaudran (Paris, France) found.

Source

And other rare earth coexistence.

Element USES

Used for carbon arc ignition, permanent magnets, laser, alloy, headset, absorbent nuclear reactions.

physical property

State: silver rare earth metal.

Melting point (℃) : 1072
Boiling point (℃) : 1791
Density (g/cc, 300 K) : 7.52


Than hot/J/gK: 0.2
Evaporation heat/KJ/mol: 166.4
Melting hot/KJ/mol: 8.63


Conductive rate / 106 / cm: 0.00956
Coefficient of thermal conductivity/W/cmK: 0.133

Geological data

abundance
Retention time/year: 200

The sun (relative to the H = 1 x 1012) : 0.2 sea/P.P.M. :
The earth's crust/P.P.M. : 7.9 the Atlantic ocean surface: 4.0 x 10-seven Pacific surface: 4.0 x 10-seven
Atmospheric/P.P.M. (volume) : the Atlantic ocean depths: 6.4 x 10-seven deep in the Pacific: 10 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-3:0.008 days intake/mg: unknown
Bone/P.P.M. : people (70 Kg) are total body/mg: c 0.05

Detailed information

Samarium/Sm