Group Number
Not Available
Not Available
Element Family
Lanthanide
Actinide
Space Group Name
P63/mmc
Fm_ 3m
Interesting Facts
- At times Terbium metal acts same as Calcium.
- Terbium metal closely similar to Lanthanum metal.
Not Available
Sources
Found in Minerals, Found with Other Rare Earth Metals, Mining, Ores of Minerals
Obtained by Treating Radium with Neutrons, Ores of metals
Who Discovered
Carl Gustaf Mosander
Friedrich Oskar Giesel
Discovery
In 1842
In 1902
Abundance In Universe
Not Available
Abundance In Sun
~-9999 %
Abundance In Meteorites
Not Available
Abundance In Earth's Crust
Not Available
Abundance In Oceans
Not Available
Uses & Benefits
- Terbium salts are used in optical devices like laser devices.
-
Terbium’s alloy lengthens and shortens the magnetic field and this effect forms loudspeaker.
- Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
Industrial Uses
Electronic Industry
NA
Other Uses
Alloys
Alloys, Nuclear Research, Research Purposes
Present in Human Body
No
No
Physical State
Solid
Solid
Color
Silvery White
Silvery White
Brinell Hardness
Not Available
Vickers Hardness
Not Available
Speed of Sound
Not Available
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
Pauling Electronegativity
Not Available
Allred Rochow Electronegativity
Pauling Electropositivity
Not Available
Electrochemical Equivalent
Electron Work Function
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Electron Configuration
[Xe] 4f9 6s2
[Rn] 6d1 7s2
Crystal Structure
Hexagonal Close Packed (HCP)
Face Centered Cubic (FCC)
Crystal Lattice
HCP-Crystal-Structure-of-Terbium.jpg#100
FCC-Crystal-Structure-of-Actinium.jpg#100
Covalent Radius
Not Available
Van der Waals Radius
Not Available
Valence Electron Potential
Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Density At Room Temperature
Density When Liquid (at m.p.)
Not Available
Tensile Strength
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure at 1000 K
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
Ductile, Malleable
NA
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Property
Conductor
Unknown
Resistivity
Not Available
Electrical Conductivity
Not Available
Electron Affinity
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Enthalpy of Vaporization
Not Available
Enthalpy of Fusion
Not Available