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Special formed

Holmium  
Formula: Ho
Alias / Keywords: Holmium Rod, Holmium Metal Rod, Ho Rod, Ho Metal Rod, Holmium Tube, Holmium Metal Tube, Ho Tube, Ho Metal Tube, Holmium Circle, Holmium Metal Circle, Ho Circle, Ho Metal Circle, Holmium Plate, Holmium Metal Plate, Ho Plate, Ho Metal Plate, Holmium Disc, Holmium Metal Disc, Ho Disc, Ho Metal Disc, Holmium Sheet, Holmium Metal Sheet, Ho Sheet, Ho Metal Sheet, Holmium Foil, Holmium Metal Foil, Ho Foil, Ho Metal Foil, Holmium Wire, Holmium Metal Wire, Ho Wire, Ho Metal Wire, Holmium Bar, Holmium Metal Bar, Ho Bar, Ho Metal Bar, Holmium Powder, Holmium Metal Powder, Ho Powder, Ho Metal Powder, Holmium Block, Holmium Metal Block, Ho Block, Ho Metal Block, Holmium Cubit, Holmium Metal Cubit, Ho Cubit, Ho Metal Cubit, Holmium Crucible, Holmium Metal Crucible, Ho Crucible, Ho Metal Crucible
Item no.: 931067
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Holmium Metal, is mainly used for making speciality alloys and superconductive materials. Holmium is relatively soft and malleable, and is stable in dry air at room temperature. It oxidises rapidly in moist air and at elevated temperatures. The metal has unusual magnetic properties. The metal is a rare earth metal found in monazite, gadolinite and other minerals.


[Bohr Model of Holmium]
Atomic Volume: 18.7W/D
Boiling Point: 2700°C
Compressibility: 2.47x10-6cm2/kg
Covalent Radius: 1.58Angstroms
Crystal Structure: Hexagonal
Density: 8.795g/cm3
Electrical Resistivity (298°K): 81.4μΩ-cm
Electronegativity: 1.2Pauling's
Heat of Fusion: 4.1k-cal/g-atom
Heat of Vaporization: 67K-cal/g-atom
Magnetic Moment: 10.89Bohr magnetons
Magnetic Susceptibility: 70,200x10-6emu
Melting Point: 1474°C
Specific Heat (25°C): 0.039cal/g°C
Standard Electrode Pontential:+2.1volts
Tensile Strength (annealed): 37,500psi
Thermal Neutron Cross Section: 64barns/atom
Trasformation Temperature:1428°C
Yield Strength:32100psi
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Applications

Holmium alloys are used as a magnetic flux concentrator to create the strongest artificially-generated magnetic fields. It is also used in nuclear reactors for nuclear control rods. Holmium oxide is used as yellow gas colouring.

Holmium in the environment

Holmium is one of the rarer of the rare-earth elements but is, nevertheless, 20 times more abundant than Silver. Like all other rare earths, Holmium is not naturally found as free element. It is found in minerals such as monazite and bastanasite, even if it is just a minor components of such ores.
World production of Holmium is around 10 tonnes per year and main mining areas are China, USA, Brazil, India, Sri Lanka and Australia. Reserves of Holmium are hestimated to be around 400.000 tonnes.

Health effects of Holmium

Holmium has no biological role and it is considered one of the least abundant elements present in human body. It has been noted that Holmium stimulates metabolism, even if it appears to have a low acute toxic rating.

Environmental effects of Holmium

Holmium poses no Environmental therat to plants and animals.

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