Category

Praseodymium

Catalogue

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

Atomic structure

Atomic radius/A: 2.67
Atomic volume/cm3 / mol: 20.8
Electronic model
Electronic configuration: 1 2 3 4 s2p6 s2 s2p6d10 s2p6d10f3 5 s2p6 6 s2
Ion radius/A: 1.013

Covalent radius/A: 1.65 oxidation state: 3, 4

Discovery

1885 by Baron Auer von Welsbach (Austria, Vienna) found.

Source

From the same salt and neodymium gain.

Element USES

Used for glass dyeing, ceramic glaze, and neodymium manufacturing lens together.

physical property

State: rare earth metal.

Melting point (℃) : 931
Boiling point (℃) : 3512
Density (g/cc, 300 K) : 6.77


Than hot/J/gK: 0.19
Evaporation heat/KJ/mol: 296.8
Melting hot/KJ/mol: 6.89


Conductive rate / 106 / cm: 0.0148

Geological data

abundance
Retention time/year: unknown

The sun (relative to the H = 1 x 1012) : 4.6 sea/P.P.M. :
The earth's crust/P.P.M. : 9.5 the Atlantic ocean surface: 4 x 10-seven Pacific surface: 4.4 x 10-seven
Atmospheric/P.P.M. (volume) : the Atlantic ocean depths: 7 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: th intake/mg: unknown
Bone/P.P.M. : people (70 Kg) are total body/mg: unknown, but very low.

Detailed information

Praseodymium/Pr