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Terbium vs Rhenium

Terbium
Rhenium
Rhenium vs Terbium


Periodic Table
Symbol
Tb   
Re   
Group Number
Not Available   
7   
11
Period Number
6   
6   
Block
f block   
d block   
Element Family
Lanthanide   
Transition Metal   
CAS Number
7440279   
99+
7440155   
99+
Space Group Name
P63/mmc   
P63/mmc   
Space Group Number
194.00   
5
194.00   
5
Facts
Interesting Facts
  • At times Terbium metal acts same as Calcium.
  • Terbium metal closely similar to Lanthanum metal.
  
  • Chemical properties of Rhenium are similar to Manganese.
  • Rhenium metal is created while refining Molybdenum.
  
Sources
Found in Minerals, Found with Other Rare Earth Metals, Mining, Ores of Minerals   
Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Carl Gustaf Mosander   
Masataka Ogawa   
Discovery
In 1842   
In 1908   
Abundance
  
  
Abundance In Universe
5 * 10-8 %   
27
2 * 10-8 %   
29
Abundance In Sun
~0.00000001 %   
29
~0.00000001 %   
29
Abundance In Meteorites
0.00 %   
99+
0.00 %   
99+
Abundance In Earth's Crust
0.00 %   
40
0.00 %   
99+
Abundance In Oceans
0.00 %   
99+
0.00 %   
34
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.
  
  • Alloys of Rhenium are used as an electric contact material. It can resist withstand arc corrosion.
  • Its catalysts are used in hydrogenation of fine chemicals. Its Alloy with nickel is used to produce turbine blades.
  
Industrial Uses
Electronic Industry   
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
NA   
Other Uses
Alloys   
Alloys   
Biological Properties
  
  
Toxicity
Low Toxic   
Low Toxic   
Present in Human Body
No   
No   
Physical Properties
Melting Point
1,356.00 °C   
33
3,180.00 °C   
2
Boiling Point
3,123.00 °C   
29
5,627.00 °C   
2
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Silvery Gray   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
7.00   
3
Brinell Hardness
677.00 MPa   
17
1,320.00 MPa   
8
Vickers Hardness
863.00 MPa   
13
1,350.00 MPa   
7
Speed of Sound
2,620.00 m/s   
35
4,700.00 m/s   
15
Optical Properties
  
  
Allotropes
No   
No   
α Allotropes
Not Available   
Not Available   
β Allotropes
Not Available   
Not Available   
γ Allotropes
Not Available   
Not Available   
Chemical Properties
Chemical Formula
Tb   
Re   
Isotopes
  
  
Known Isotopes
26   
13
33   
6
Electronegativity
  
  
Pauling Electronegativity
Not Available   
1.90   
11
Allred Rochow Electronegativity
1.10   
30
1.46   
15
Allen Electronegativity
Not Available   
1.60   
21
Electropositivity
  
  
Pauling Electropositivity
Not Available   
2.10   
99+
Ionization Energies
  
  
1st Energy Level
603.40 kJ/mol   
99+
760.00 kJ/mol   
20
2nd Energy Level
1,174.80 kJ/mol   
99+
1,260.00 kJ/mol   
99+
3rd Energy Level
2,417.00 kJ/mol   
99+
2,510.00 kJ/mol   
99+
4th Energy Level
4,203.00 kJ/mol   
31
3,640.00 kJ/mol   
99+
Electrochemical Equivalent
1.98 g/amp-hr   
31
0.99 g/amp-hr   
99+
Electron Work Function
3.00 eV   
36
4.96 eV   
7
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Corrosion, Ionization, Radioactive Isotopes, Solubility   
Atomic Properties
Atomic Number
65   
99+
75   
99+
Electron Configuration
[Xe] 4f9 6s2   
[Xe] 4f14 5d5 6s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Terbium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
65   
99+
75   
40
Number of Neutrons
94   
36
111   
26
Number of Electrons
65   
99+
75   
40
Radius of an Atom
  
  
Atomic Radius
177.00 pm   
17
137.00 pm   
40
Covalent Radius
194.00 pm   
16
151.00 pm   
34
Van der Waals Radius
221.00 pm   
22
200.00 pm   
28
Atomic Weight
158.93 amu   
99+
186.21 amu   
36
Atomic Volume
19.20 cm3/mol   
22
8.85 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Gadolinium
  
Tungsten
  
Next Element
Dysprosium
  
Osmium
  
Valence Electron Potential
46.80 (-eV)   
33
180.00 (-eV)   
3
Lattice Constant
360.10 pm   
36
276.10 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.58   
13
1.62   
3
Mechanical Properties
Density
  
  
Density At Room Temperature
8.23 g/cm3   
99+
21.02 g/cm3   
12
Density When Liquid (at m.p.)
7.65 g/cm3   
30
18.90 g/cm3   
4
Tensile Strength
60.00 MPa   
17
1,070.00 MPa   
3
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
29
Not Available   
Vapor Pressure at 2000 K
12.50 (Pa)   
8
0.00 (Pa)   
29
Elasticity properties
  
  
Shear Modulus
22.10 GPa   
32
178.00 GPa   
3
Bulk Modulus
38.70 GPa   
33
370.00 GPa   
2
Young's Modulus
55.70 GPa   
34
463.00 GPa   
2
Poisson Ratio
0.26   
21
0.30   
14
Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
8.23   
39
21.02   
5
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
1.15 nΩ·m   
99+
193.00 nΩ·m   
20
Electrical Conductivity
0.01 106/cm Ω   
99+
0.05 106/cm Ω   
33
Electron Affinity
50.00 kJ/mol   
21
14.50 kJ/mol   
35
Thermal Properties
Specific Heat
0.18 J/(kg K)   
33
0.13 J/(kg K)   
39
Molar Heat Capacity
28.91 J/mol·K   
9
25.48 J/mol·K   
38
Thermal Conductivity
11.10 W/m·K   
99+
48.00 W/m·K   
31
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
10.30 µm/(m·K)   
38
6.20 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
330.90 kJ/mol   
26
707.10 kJ/mol   
3
Enthalpy of Fusion
10.80 kJ/mol   
34
33.05 kJ/mol   
2
Enthalpy of Atomization
314.00 kJ/mol   
33
791.00 kJ/mol   
2
Standard Molar Entropy
73.20 J/mol.K   
10
36.90 J/mol.K   
99+
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