Home
 Compare Metals

Tb Element
Terbium


Periodic Table
Symbol
Tb
Group Number
3 15
Period Number
6 2
Block
f block
Element Family
Lanthanide
CAS Number
7440279 53
Space Group Name
P63/mmc
Space Group Number
194.00 7
Facts
Interesting Facts
  • At times Terbium metal acts same as Calcium.
  • Terbium metal closely similar to Lanthanum metal.
Sources
Found in Minerals, Found with Other Rare Earth Metals, Mining, Ores of Minerals
History
Who Discovered
Carl Gustaf Mosander
Discovery
In 1842
Abundance
Abundance In Universe
0.00 % 28
Abundance In Sun
0.00 % 29
Abundance In Meteorites
0.00 % 46
Abundance In Earth's Crust
0.00 % 40
Abundance In Oceans
0.00 % 43
Abundance In Humans
0.00 % 24
Uses
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.
Industrial Uses
Electronic Industry
Medical Uses
-
Other Uses
Alloys
Biological Properties
Toxicity
Low Toxic
Present in Human Body
No
In Blood
0.00 Blood/mg dm-3 37
In Bone
0.00 p.p.m. 41
Physical
Melting Point
1,356.00 °C 33
Boiling Point
3,123.00 °C 30
Appearance
Physical State
Solid
Color
Silvery White
Luster
Metallic
Hardness
Mohs Hardness
1.50 19
Brinell Hardness
677.00 MPa 19
Vickers Hardness
863.00 MPa 20
Speed of Sound
2,620.00 m/s 49
Optical Properties
Refractive Index
1.60 32
Reflectivity
35.00 % 34
Allotropes
No
α Allotropes
-
β Allotropes
-
γ Allotropes
-
Chemical
Chemical Formula
Tb
Isotopes
Known Isotopes
26 13
Electronegativity
Pauling Electronegativity
1.20 40
Sanderson Electronegativity
1.20 32
Allred Rochow Electronegativity
1.10 31
Mulliken-Jaffe Electronegativity
1.20 39
Allen Electronegativity
1.20 48
Electropositivity
Pauling Electropositivity
2.20 39
Ionization Energies
1st Energy Level
603.40 kJ/mol 51
2nd Energy Level
1,174.80 kJ/mol 65
3rd Energy Level
2,417.00 kJ/mol 50
4th Energy Level
4,203.00 kJ/mol 41
5th Energy Level
5,658.00 kJ/mol 61
6th Energy Level
5,658.00 kJ/mol 75
7th Energy level
5,420.00 kJ/mol 69
8th Energy Level
5,650.00 kJ/mol 64
9th Energy Level
5,650.00 kJ/mol 61
10th Energy Level
5,650.00 kJ/mol 62
11th Energy Level
5,650.00 kJ/mol 67
12th Energy Level
5,650.00 kJ/mol 69
13th Energy Level
5,650.00 kJ/mol 58
14th Energy Level
5,650.00 kJ/mol 46
15th Energy Level
56,500.00 kJ/mol 58
16th Energy Level
56,500.00 kJ/mol 46
17th Energy Level
565.80 kJ/mol 72
18th Energy Level
5,658.00 kJ/mol 60
19th Energy Level
565.00 kJ/mol 70
20th Energy Level
565.00 kJ/mol 64
21st Energy Level
565.80 kJ/mol 74
22nd Energy Level
565.00 kJ/mol 59
23rd Energy Level
565.80 kJ/mol 74
24th Energy Level
565.80 kJ/mol 61
25th Energy Level
565.00 kJ/mol 61
26th Energy Level
565.80 kJ/mol 68
27th Energy Level
565.80 kJ/mol 64
28th Energy Level
565.80 kJ/mol 68
29th Energy Level
565.80 kJ/mol 70
30th Energy Level
565.00 kJ/mol 65
Electrochemical Equivalent
1.98 g/amp-hr 35
Electron Work Function
3.00 eV 47
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Atomic
Atomic Number
65 51
Electron Configuration
[Xe] 4f9 6s2
Crystal Structure
Hexagonal Close Packed (HCP)
Crystal Lattice
HCP-Crystal-Structure-of-Terbium.jpg#100
Atom
Number of Protons
65 50
Number of Neutrons
94 37
Number of Electrons
65 50
Radius of an Atom
Atomic Radius
177.00 pm 19
Covalent Radius
194.00 pm 16
Van der Waals Radius
221.00 pm 27
Atomic Weight
158.93 amu 46
Atomic Volume
19.20 cm3/mol 34
Adjacent Atomic Numbers
Previous Element
14
Next Element
78
Valence Electron Potential
46.80 (-eV) 34
Lattice Constant
360.10 pm 40
Lattice Angles
π/2, π/2, 2 π/3
Lattice C/A Ratio
1.58 35
Mechanical
Density
Density At Room Temperature
8.23 g/cm3 55
Density When Liquid (at m.p.)
7.65 g/cm3 57
Tensile Strength
60.00 MPa 35
Viscosity
0.00 25
Vapor Pressure
Vapor Pressure at 1000 K
0.00 (Pa) 31
Vapor Pressure at 2000 K
12.50 (Pa) 8
Elasticity properties
Shear Modulus
22.10 GPa 42
Bulk Modulus
38.70 GPa 40
Young's Modulus
55.70 GPa 37
Poisson Ratio
0.26 21
Other Mechanical Properties
Ductile, Malleable
Magnetic
Magnetic Characteristics
Specific Gravity
8.23 55
Magnetic Ordering
Paramagnetic
Permeability
0.00 H/m 17
Susceptibility
0.00 24
Electrical Properties
Electrical Property
Conductor
Resistivity
1.15 nΩ·m 72
Electrical Conductivity
0.01 106/cm Ω 64
Electron Affinity
50.00 kJ/mol 26
Thermal
Specific Heat
0.18 J/(kg K) 34
Molar Heat Capacity
28.91 J/mol·K 12
Thermal Conductivity
11.10 W/m·K 64
Critical Temperature
1,629.00 K 37
Thermal Expansion
10.30 µm/(m·K) 51
Enthalpy
Enthalpy of Vaporization
330.90 kJ/mol 41
Enthalpy of Fusion
10.80 kJ/mol 40
Enthalpy of Atomization
314.00 kJ/mol 44
Standard Molar Entropy
73.20 J/mol.K 10
Summary >>
<< Thermal

Lanthanide Series

Compare Lanthanide Series

Lanthanide Series

» More Lanthanide Series

Compare Lanthanide Series

» More Compare Lanthanide Series
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!