Symbol
Re
  
Tm
  
Group Number
Not Available
  
Period Number
6
  
6
  
Block
d block
  
f block
  
Element Family
Transition Metal
  
Lanthanide
  
Space Group Name
P63/mmc
  
P63/mmc
  
Interesting Facts
- Chemical properties of Rhenium are similar to Manganese.
- Rhenium metal is created while refining Molybdenum.
  
- Thulium metal can resist corrosion due to dry air .
- Only Tm-169 isotope of Thulium metal occur naturally.
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Masataka Ogawa
  
Per Teodor Cleve
  
Discovery
In 1908
  
In 1879
  
Abundance
  
  
Abundance In Sun
~0.00000001 %
  
29
~0.00000002 %
  
28
Abundance In Earth's Crust
Uses & Benefits
- 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.
  
- Thulium metal produces isotopes that emits X-rays. This isotope is used in X-ray machine.
-
Thulium element is also used in Surgical equipment like laser.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
  
NA
  
Medical Uses
NA
  
NA
  
Other Uses
Alloys
  
Alloys, Nuclear Research, Research Purposes
  
Biological Properties
  
  
Toxicity
Low Toxic
  
Unknown
  
Present in Human Body
No
  
No
  
Melting Point
1,545.00 °C
  
23
Boiling Point
1,730.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery Gray
  
Silvery Gray
  
Luster
Metallic
  
Metallic
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
1,320.00 MPa
  
8
Vickers Hardness
1,350.00 MPa
  
7
Speed of Sound
4,700.00 m/s
  
15
Not Available
  
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Re
  
Tm
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Allred Rochow Electronegativity
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
760.00 kJ/mol
  
20
596.70 kJ/mol
  
99+
2nd Energy Level
1,260.00 kJ/mol
  
99+
1,160.00 kJ/mol
  
99+
3rd Energy Level
2,510.00 kJ/mol
  
99+
2,285.00 kJ/mol
  
99+
4th Energy Level
3,640.00 kJ/mol
  
99+
4,120.00 kJ/mol
  
33
Electrochemical Equivalent
0.99 g/amp-hr
  
99+
2.10 g/amp-hr
  
26
Electron Work Function
Not Available
  
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Solubility
  
Ionization, Radioactive Isotopes, Solubility
  
Electron Configuration
[Xe] 4f14 5d5 6s2
  
[Xe] 4f13 6s2
  
Crystal Structure
Hexagonal Close Packed (HCP)
  
Hexagonal Close Packed (HCP)
  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
  
HCP-Crystal-Structure-of-Thulium.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Van der Waals Radius
Not Available
  
Atomic Weight
168.93 amu
  
99+
Atomic Volume
8.85 cm3/mol
  
99+
18.10 cm3/mol
  
28
Adjacent Atomic Numbers
  
  
Valence Electron Potential
180.00 (-eV)
  
3
49.70 (-eV)
  
28
Lattice Angles
π/2, π/2, 2 π/3
  
π/2, π/2, 2 π/3
  
Density
  
  
Density At Room Temperature
21.02 g/cm3
  
12
Density When Liquid (at m.p.)
Tensile Strength
1,070.00 MPa
  
3
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Vapor Pressure at 2000 K
Not Available
  
Elasticity properties
  
  
Other Mechanical Properties
Ductile, Malleable
  
Ductile, Malleable
  
Magnetic Characteristics
  
  
Magnetic Ordering
Paramagnetic
  
Paramagnetic
  
Electrical Properties
  
  
Electrical Property
Conductor
  
Conductor
  
Resistivity
193.00 nΩ·m
  
20
Electrical Conductivity
0.05 106/cm Ω
  
33
0.02 106/cm Ω
  
99+
Electron Affinity
14.50 kJ/mol
  
35
50.00 kJ/mol
  
21
Specific Heat
0.13 J/(kg K)
  
39
0.16 J/(kg K)
  
35
Molar Heat Capacity
25.48 J/mol·K
  
38
27.03 J/mol·K
  
22
Thermal Conductivity
48.00 W/m·K
  
31
16.90 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
6.20 µm/(m·K)
  
99+
13.30 µm/(m·K)
  
29
Enthalpy
  
  
Enthalpy of Vaporization
707.10 kJ/mol
  
3
191.00 kJ/mol
  
99+
Enthalpy of Fusion
33.05 kJ/mol
  
2
16.80 kJ/mol
  
17
Enthalpy of Atomization
791.00 kJ/mol
  
2
247.00 kJ/mol
  
99+
Standard Molar Entropy
36.90 J/mol.K
  
99+
74.00 J/mol.K
  
9