Group Number
Not Available
Not Available
Element Family
Lanthanide
Lanthanide
Space Group Name
P63/mmc
R_ 3m
Interesting Facts
- Holmium metal is very soft and malleable.
- Holmium metal is well known for its corrosion resistivity.
- Samarium metals helps stimulating body metabolism.
- Samarium metals was 1st observed by Jean Charles Galissard de Marignac in Dydimia in 1853.
Sources
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining, Ores of Minerals
Who Discovered
Marc Delafontaine
Lecoq de Boisbaudran
Discovery
In 1878
In 1879
Abundance In Sun
~-9999 %
Abundance In Earth's Crust
Uses & Benefits
- Holmium metal has an ability to absorb neutrons, so this metal is used in nuclear reactors to keep the chain reactions of elements under control.
-
Alloys of Holmium are used to produce Magnet.
- Magnets of Samarium cobalt alloy are stronger than that of Iron and hence, they are used in microwave application.
- Samarium metal also used in optical lasers and infrared absorbing glasses and as a neutron absorber.
Industrial Uses
NA
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
Other Uses
Alloys, Nuclear Research
Alloys, In Nuclear Reactors
Toxicity
Low Toxic
Slightly Toxic
Present in Human Body
No
Yes
Physical State
Solid
Solid
Color
Silvery White
Silvery White
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
Pauling Electronegativity
Allred Rochow Electronegativity
Pauling Electropositivity
Electrochemical Equivalent
Electron Work Function
Not Available
Other Chemical Properties
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes
Electron Configuration
[Xe] 4f11 6s2
[Xe] 4f6 6s2
Crystal Structure
Hexagonal Close Packed (HCP)
Rhombohedral (RHO)
Crystal Lattice
HCP-Crystal-Structure-of-Holmium.jpg#100
RHO-Crystal-Structure-of-Samarium.jpg#100
Valence Electron Potential
Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
Lattice C/A Ratio
Not Available
Density At Room Temperature
Density When Liquid (at m.p.)
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Other Mechanical Properties
Ductile, Malleable, Sectile
NA
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Property
Conductor
Conductor
Critical Temperature
Not Available
Not Available