Category

Holmium

Catalogue

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

Atomic structure

Atomic radius/A: 2.47
Atomic volume/cm3 / mol: 18.7
Electronic configuration: 1 2 3 4 s2p6 s2 s2p6d10 s2p6d10f11 5 s2p6 6 s2
Ion radius/A: 0.901
Covalent radius/A: 1.58 oxidation state: 3

Discovery

1878 by P.T. Cleve (Sweden, uppsala), m. Delafontaine and J.L. Soret (Geneva, Switzerland city) were found.

Source

Exist in silicon beryllium ore y.

Element USES

Used for nuclear reactions bar.

physical property

State: silver rare earth metal.

Melting point (℃) : 1470
Boiling point (℃) : 2695
Density (g/cc, 300 K) : 8.8


Than hot/J/gK: 0.16
Evaporation heat/KJ/mol: 241
Melting hot/KJ/mol: 12.2


Conductive rate / 106 / cm: 0.0124
Coefficient of thermal conductivity/W/cmK: 0.162

Geological data

abundance
Retention time/year: unknown

The sun (relative to the H = 1 x 1012) : unknown sea/P.P.M. :
The earth's crust/P.P.M. : 1.4 the Atlantic ocean surface: 2.4 x 10-seven Pacific surface: 1.6 x 10-seven
Atmospheric/P.P.M. (volume) : the Atlantic ocean depths: 2.9 x 10-seven deep in the Pacific: 5.8 x 10-seven

Biology data

Content in the human body
Liver/P.P.M. :
Organs: unknown, but less. 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

Holmium/Ho