Symbol
Re
  
Fm
  
Group Number
Not Available
  
Period Number
6
  
7
  
Block
d block
  
f block
  
Element Family
Transition Metal
  
Actinide
  
Space Group Name
P63/mmc
  
Not Available
  
Space Group Number
Not Available
  
Interesting Facts
- Chemical properties of Rhenium are similar to Manganese.
- Rhenium metal is created while refining Molybdenum.
  
- Fermium metal is highly radioactive in nature.
- Fermium is synthetically produced metal.
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
Bombarding Pu-239 with Neutrons
  
History
  
  
Who Discovered
Masataka Ogawa
  
Lawrence Berkeley National Laboratory
  
Discovery
In 1908
  
In 1952
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~0.00000001 %
  
29
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
Not Available
  
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.
  
- Currently known uses of Fermium metal are limited to research purpose only.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
  
NA
  
Medical Uses
NA
  
NA
  
Other Uses
Alloys
  
NA
  
Biological Properties
  
  
Toxicity
Low Toxic
  
Unknown
  
Present in Human Body
No
  
No
  
In Blood
Not Available
  
0.00 Blood/mg dm-3
  
37
In Bone
Not Available
  
0.00 p.p.m.
  
36
Melting Point
1,527.00 °C
  
26
Boiling Point
Not Available
  
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery Gray
  
Unknown
  
Luster
Metallic
  
Not Defined
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
1,320.00 MPa
  
8
Not Available
  
Vickers Hardness
1,350.00 MPa
  
7
Not Available
  
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
  
Fm
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Allred Rochow Electronegativity
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
760.00 kJ/mol
  
20
627.00 kJ/mol
  
99+
2nd Energy Level
1,260.00 kJ/mol
  
99+
1,225.00 kJ/mol
  
99+
3rd Energy Level
2,510.00 kJ/mol
  
99+
2,363.00 kJ/mol
  
99+
4th Energy Level
3,640.00 kJ/mol
  
99+
3,792.00 kJ/mol
  
99+
Electrochemical Equivalent
0.99 g/amp-hr
  
99+
3.20 g/amp-hr
  
13
Electron Work Function
Not Available
  
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Solubility
  
Ionization, Radioactive Isotopes, Radioactivity
  
Electron Configuration
[Xe] 4f14 5d5 6s2
  
[Rn] 5f12 7s2
  
Crystal Structure
Hexagonal Close Packed (HCP)
  
Not Known
  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
  
Unknown-Crystal-Structure-of-Fermium.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Radius
Not Available
  
Covalent Radius
Not Available
  
Atomic Volume
8.85 cm3/mol
  
99+
Not Available
  
Adjacent Atomic Numbers
  
  
Valence Electron Potential
180.00 (-eV)
  
3
Not Available
  
Lattice Constant
Not Available
  
Lattice Angles
π/2, π/2, 2 π/3
  
NA
  
Lattice C/A Ratio
Not Available
  
Density
  
  
Density At Room Temperature
21.02 g/cm
3
  
12
Not Available
  
Density When Liquid (at m.p.)
Not Available
  
Tensile Strength
1,070.00 MPa
  
3
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
Ductile, Malleable
  
NA
  
Magnetic Characteristics
  
  
Specific Gravity
Not Available
  
Magnetic Ordering
Paramagnetic
  
Unknown
  
Electrical Properties
  
  
Electrical Property
Conductor
  
Unknown
  
Resistivity
193.00 nΩ·m
  
20
Not Available
  
Electrical Conductivity
0.05 10
6/cm Ω
  
33
Not Available
  
Electron Affinity
14.50 kJ/mol
  
35
Not Available
  
Specific Heat
0.13 J/(kg K)
  
39
Not Available
  
Molar Heat Capacity
25.48 J/mol·K
  
38
Not Available
  
Thermal Conductivity
48.00 W/m·K
  
31
Not Available
  
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
6.20 µm/(m·K)
  
99+
Not Available
  
Enthalpy
  
  
Enthalpy of Vaporization
707.10 kJ/mol
  
3
Not Available
  
Enthalpy of Fusion
33.05 kJ/mol
  
2
Not Available
  
Enthalpy of Atomization
791.00 kJ/mol
  
2
Not Available
  
Standard Molar Entropy
36.90 J/mol.K
  
99+
Not Available