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Tb Element
Terbium


Periodic Table
0
Symbol
Tb 0
Group Number
Not Available 0
Period Number
6 2
Block
f block 0
Element Family
Lanthanide 0
CAS Number
7440279 53
Space Group Name
P63/mmc 0
Space Group Number
194.00 5
Facts
0
Interesting Facts
  • At times Terbium metal acts same as Calcium.
  • Terbium metal closely similar to Lanthanum metal.
0
Sources
Found in Minerals, Found with Other Rare Earth Metals, Mining, Ores of Minerals 0
History
0
Who Discovered
Carl Gustaf Mosander 0
Discovery
In 1842 0
Abundance
0
Abundance In Universe
5 * 10-8 % 27
Abundance In Sun
~0.00000001 % 29
Abundance In Meteorites
0.00 % 46
Abundance In Earth's Crust
0.00 % 40
Abundance In Oceans
0.00 % 43
Abundance In Humans
Not Available 0
Uses
0
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.
0
Industrial Uses
Electronic Industry 0
Medical Uses
NA 0
Other Uses
Alloys 0
Biological Properties
0
Toxicity
Low Toxic 0
Present in Human Body
No 0
In Blood
Not Available 0
In Bone
Not Available 0
Physical
0
Melting Point
1,356.00 °C 33
Boiling Point
3,123.00 °C 29
Appearance
0
Physical State
Solid 0
Color
Silvery White 0
Luster
Metallic 0
Hardness
0
Mohs Hardness
Not Available 0
Brinell Hardness
677.00 MPa 17
Vickers Hardness
863.00 MPa 13
Speed of Sound
2,620.00 m/s 35
Optical Properties
0
Refractive Index
Not Available 0
Reflectivity
Not Available 0
Allotropes
No 0
α Allotropes
Not Available 0
β Allotropes
Not Available 0
γ Allotropes
Not Available 0
Chemical
0
Chemical Formula
Tb 0
Isotopes
0
Known Isotopes
26 13
Electronegativity
0
Pauling Electronegativity
Not Available 0
Sanderson Electronegativity
Not Available 0
Allred Rochow Electronegativity
1.10 30
Mulliken-Jaffe Electronegativity
Not Available 0
Allen Electronegativity
Not Available 0
Electropositivity
0
Pauling Electropositivity
Not Available 0
Ionization Energies
0
1st Energy Level
603.40 kJ/mol 51
2nd Energy Level
1,174.80 kJ/mol 64
3rd Energy Level
2,417.00 kJ/mol 49
4th Energy Level
4,203.00 kJ/mol 31
5th Energy Level
Not Available 0
6th Energy Level
Not Available 0
7th Energy level
Not Available 0
8th Energy Level
Not Available 0
9th Energy Level
Not Available 0
10th Energy Level
Not Available 0
11th Energy Level
Not Available 0
12th Energy Level
Not Available 0
13th Energy Level
Not Available 0
14th Energy Level
Not Available 0
15th Energy Level
Not Available 0
16th Energy Level
Not Available 0
17th Energy Level
Not Available 0
18th Energy Level
Not Available 0
19th Energy Level
Not Available 0
20th Energy Level
Not Available 0
21st Energy Level
Not Available 0
22nd Energy Level
Not Available 0
23rd Energy Level
Not Available 0
24th Energy Level
Not Available 0
25th Energy Level
Not Available 0
26th Energy Level
Not Available 0
27th Energy Level
Not Available 0
28th Energy Level
Not Available 0
29th Energy Level
Not Available 0
30th Energy Level
Not Available 0
Electrochemical Equivalent
1.98 g/amp-hr 31
Electron Work Function
3.00 eV 36
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility 0
Atomic
0
Atomic Number
65 51
Electron Configuration
[Xe] 4f9 6s2 0
Crystal Structure
Hexagonal Close Packed (HCP) 0
Crystal Lattice
HCP-Crystal-Structure-of-Terbium.jpg#100 0
Atom
0
Number of Protons
65 50
Number of Neutrons
94 36
Number of Electrons
65 50
Radius of an Atom
0
Atomic Radius
177.00 pm 17
Covalent Radius
194.00 pm 16
Van der Waals Radius
221.00 pm 22
Atomic Weight
158.93 amu 46
Atomic Volume
19.20 cm3/mol 22
Adjacent Atomic Numbers
0
Previous Element
14 0
Next Element
78 0
Valence Electron Potential
46.80 (-eV) 33
Lattice Constant
360.10 pm 36
Lattice Angles
π/2, π/2, 2 π/3 0
Lattice C/A Ratio
1.58 13
Mechanical
0
Density
0
Density At Room Temperature
8.23 g/cm3 50
Density When Liquid (at m.p.)
7.65 g/cm3 30
Tensile Strength
60.00 MPa 17
Viscosity
Not Available 0
Vapor Pressure
0
Vapor Pressure at 1000 K
0.00 (Pa) 29
Vapor Pressure at 2000 K
12.50 (Pa) 8
Elasticity properties
0
Shear Modulus
22.10 GPa 32
Bulk Modulus
38.70 GPa 33
Young's Modulus
55.70 GPa 34
Poisson Ratio
0.26 21
Other Mechanical Properties
Ductile, Malleable 0
Magnetic
0
Magnetic Characteristics
0
Specific Gravity
8.23 39
Magnetic Ordering
Paramagnetic 0
Permeability
Not Available 0
Susceptibility
Not Available 0
Electrical Properties
0
Electrical Property
Conductor 0
Resistivity
1.15 nΩ·m 60
Electrical Conductivity
0.01 106/cm Ω 59
Electron Affinity
50.00 kJ/mol 21
Thermal
0
Specific Heat
0.18 J/(kg K) 33
Molar Heat Capacity
28.91 J/mol·K 9
Thermal Conductivity
11.10 W/m·K 62
Critical Temperature
Not Available 0
Thermal Expansion
10.30 µm/(m·K) 38
Enthalpy
0
Enthalpy of Vaporization
330.90 kJ/mol 26
Enthalpy of Fusion
10.80 kJ/mol 34
Enthalpy of Atomization
314.00 kJ/mol 33
Standard Molar Entropy
73.20 J/mol.K 10
Summary >>
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