Group Number
Not Available
Element Family
Transition Metal
Lanthanide
Space Group Name
R_ 3m
P63/mmc
Interesting Facts
- At room temperature mercury is found in a liquid state.
- A coin of pound or rupees floats in mercury.
- Because of its low melting point and boiling point it is used in thermometers.
- Lanthanum metal is highly malleable, ductile and sectile.
- If exposed to air Lanthanum metal oxidizes rapidly.
Sources
Mining, Ores of Minerals
Found in Minerals, Mining, Ores of Minerals
Who Discovered
Ancient Chinese and Indians
Carl Gustaf Mosander
Discovery
Before 2000 BCE
In 1838
Abundance In Universe
Not Available
Abundance In Sun
~-9999 %
Abundance In Meteorites
Not Available
Abundance In Earth's Crust
Abundance In Oceans
Not Available
Uses & Benefits
- It is a liquid metal at room temperature, but it is a toxic heavy metal and hence many uses of mercury are under review or phased out.
- It is manly used as a catalysts in chemical industry.
- 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
Electrical Industry, Electronic Industry
Electrical Industry, Electronic Industry
Medical Uses
Dentistry
NA
Other Uses
Alloys, Mirror Manufacturing, Pharmaceutical Industry
Alloys, Mirror Manufacturing
Toxicity
Highly Toxic
Low Toxic
Present in Human Body
Yes
Yes
Melting Point
Not Available
Physical State
Liquid
Solid
Color
Silver
Silvery White
Mohs Hardness
Not Available
Brinell Hardness
Not Available
Vickers Hardness
Not Available
Refractive Index
Not Available
Reflectivity
Not Available
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
Pauling Electronegativity
Sanderson Electronegativity
Not Available
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
Allen Electronegativity
Not Available
Pauling Electropositivity
4th Energy Level
Not Available
5th Energy Level
Not Available
Electrochemical Equivalent
Other Chemical Properties
Flammability, Ionization, Solubility
Ionization, Radioactive Isotopes, Solubility
Electron Configuration
[Xe] 4f14 5d10 6s2
[Xe] 5d2 6s2
Crystal Structure
Rhombohedral (RHO)
Double Hexagonal Close Packed (DHCP)
Crystal Lattice
RHO-Crystal-Structure-of-Mercury.jpg#100
DHCP-Crystal-Structure-of-Lanthanum.jpg#100
Valence Electron Potential
Lattice Angles
NA
π/2, π/2, 2 π/3
Lattice C/A Ratio
Not Available
Density At Room Temperature
Density When Liquid (at m.p.)
Not Available
Tensile Strength
Not Available
Not Available
Vapor Pressure at 2000 K
Not Available
Shear Modulus
Not Available
Bulk Modulus
Not Available
Young's Modulus
Not Available
Poisson Ratio
Not Available
Other Mechanical Properties
NA
Ductile
Magnetic Ordering
Diamagnetic
Paramagnetic
Electrical Property
Conductor
Conductor
Critical Temperature
Not Available