Group Number
Not Available
Not Available
Element Family
Lanthanide
Lanthanide
Space Group Name
R_ 3m
P63/mmc
Interesting Facts
- Samarium metals helps stimulating body metabolism.
- Samarium metals was 1st observed by Jean Charles Galissard de Marignac in Dydimia in 1853.
- Lanthanum metal is highly malleable, ductile and sectile.
- If exposed to air Lanthanum metal oxidizes rapidly.
Sources
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining, Ores of Minerals
Who Discovered
Lecoq de Boisbaudran
Carl Gustaf Mosander
Discovery
In 1879
In 1838
Abundance In Earth's Crust
Uses & Benefits
- 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.
- It has no commercial uses, but its alloys are in high demand. Lanthanum and Nickel alloy is used for the hydrogen gas storage.
- The best-known use for mischmetal alloy of Lanthanum is; as a ‘flints’ for cigarette lighters.
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
Electrical Industry, Electronic Industry
Other Uses
Alloys, In Nuclear Reactors
Alloys, Mirror Manufacturing
Toxicity
Slightly Toxic
Low Toxic
Present in Human Body
Yes
Yes
Physical State
Solid
Solid
Color
Silvery White
Silvery White
Mohs Hardness
Not Available
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
5th Energy Level
Not Available
Electrochemical Equivalent
Other Chemical Properties
Ionization, Radioactive Isotopes
Ionization, Radioactive Isotopes, Solubility
Electron Configuration
[Xe] 4f6 6s2
[Xe] 5d2 6s2
Crystal Structure
Rhombohedral (RHO)
Double Hexagonal Close Packed (DHCP)
Crystal Lattice
RHO-Crystal-Structure-of-Samarium.jpg#100
DHCP-Crystal-Structure-of-Lanthanum.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
Vapor Pressure at 1000 K
Not Available
Vapor Pressure at 2000 K
Not Available
Other Mechanical Properties
NA
Ductile
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Property
Conductor
Conductor
Critical Temperature
Not Available
Not Available