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Tungsten vs Fermium

Tungsten
Fermium
Fermium vs Tungsten


Periodic Table
Symbol
W  
Fm  
Group Number
6  
12
Not Available  
Period Number
6  
7  
Block
d block  
f block  
Element Family
Transition Metal  
Actinide  
CAS Number
7440337  
99+
7440724  
19
Space Group Name
Im_ 3m  
Not Available  
Space Group Number
229.00  
1
Not Available  
Facts
Interesting Facts
  • Tungsten element has the second highest melting point.
  • Pure tungsten can easily cut down with the help of hacksaw.
  
  • Fermium metal is highly radioactive in nature.
  • Fermium is synthetically produced metal.
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
Bombarding Pu-239 with Neutrons  
History
  
  
Who Discovered
Not Available  
Lawrence Berkeley National Laboratory  
Discovery
In 1781  
In 1952  
Abundance
  
  
Abundance In Universe
5 * 10-8 %  
27
Not Available  
Abundance In Sun
~0.0000004 %  
23
~-9999 %  
Abundance In Meteorites
0.00 %  
39
Not Available  
Abundance In Earth's Crust
0.00 %  
39
Not Available  
Abundance In Oceans
0.00 %  
18
Not Available  
Uses
Uses & Benefits
  • Tungsten and its alloys are used in high-temperature applications like welding electrodes, high-temperature furnace, etc.
  • Tungsten carbide is very hard and used in metal working, mining and petroleum industry.
  
  • Currently known uses of Fermium metal are limited to research purpose only.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
NA  
Medical Uses
NA  
NA  
Other Uses
Alloys  
NA  
Biological Properties
  
  
Toxicity
Non Toxic  
Unknown  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
31
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
35
0.00 p.p.m.  
36
Physical Properties
Melting Point
3,410.00 °C  
1
1,527.00 °C  
26
Boiling Point
5,660.00 °C  
1
Not Available  
Appearance
  
  
Physical State
Solid  
Solid  
Color
Grayish White  
Unknown  
Luster
Lustrous  
Not Defined  
Hardness
  
  
Mohs Hardness
7.50  
2
Not Available  
Brinell Hardness
2,000.00 MPa  
4
Not Available  
Vickers Hardness
3,430.00 MPa  
1
Not Available  
Speed of Sound
4,620.00 m/s  
16
Not Available  
Optical Properties
  
  
Reflectivity
62.00 %  
13
Not Available  
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
W  
Fm  
Isotopes
  
  
Known Isotopes
33  
6
18  
21
Electronegativity
  
  
Pauling Electronegativity
2.36  
2
1.30  
32
Sanderson Electronegativity
0.98  
23
Not Available  
Allred Rochow Electronegativity
1.40  
19
1.20  
27
Allen Electronegativity
1.47  
29
Not Available  
Electropositivity
  
  
Pauling Electropositivity
1.64  
99+
2.70  
22
Ionization Energies
  
  
1st Energy Level
770.00 kJ/mol  
16
627.00 kJ/mol  
99+
2nd Energy Level
1,700.00 kJ/mol  
29
1,225.00 kJ/mol  
99+
3rd Energy Level
Not Available  
2,363.00 kJ/mol  
99+
4th Energy Level
Not Available  
3,792.00 kJ/mol  
99+
Electrochemical Equivalent
1.14 g/amp-hr  
99+
3.20 g/amp-hr  
13
Electron Work Function
4.55 eV  
13
Not Available  
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic Properties
Atomic Number
74  
99+
100  
18
Electron Configuration
[Xe] 4f14 5d4 6s2  
[Rn] 5f12 7s2  
Crystal Structure
Body Centered Cubic (BCC)  
Not Known  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
Unknown-Crystal-Structure-of-Fermium.jpg#100  
Atom
  
  
Number of Protons
74  
99+
100  
18
Number of Neutrons
110  
27
157  
7
Number of Electrons
74  
99+
100  
18
Radius of an Atom
  
  
Atomic Radius
139.00 pm  
39
Not Available  
Covalent Radius
162.00 pm  
29
Not Available  
Van der Waals Radius
200.00 pm  
28
245.00 pm  
9
Atomic Weight
183.84 amu  
37
257.00 amu  
15
Atomic Volume
9.53 cm3/mol  
99+
Not Available  
Adjacent Atomic Numbers
  
  
Previous Element
Tantalum
  
Einsteinium
  
Next Element
Rhenium
  
Mendelevium
  
Valence Electron Potential
140.00 (-eV)  
5
Not Available  
Lattice Constant
316.52 pm  
99+
Not Available  
Lattice Angles
π/2, π/2, π/2  
NA  
Lattice C/A Ratio
Not Available  
Not Available  
Mechanical Properties
Density
  
  
Density At Room Temperature
19.25 g/cm3  
16
Not Available  
Density When Liquid (at m.p.)
17.60 g/cm3  
5
Not Available  
Tensile Strength
370.00 MPa  
10
Not Available  
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
0.00 (Pa)  
32
Not Available  
Elasticity properties
  
  
Shear Modulus
161.00 GPa  
5
Not Available  
Bulk Modulus
310.00 GPa  
4
Not Available  
Young's Modulus
411.00 GPa  
4
Not Available  
Poisson Ratio
0.28  
17
Not Available  
Other Mechanical Properties
Ductile, Malleable  
NA  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
19.22  
9
Not Available  
Magnetic Ordering
Paramagnetic  
Unknown  
Electrical Properties
  
  
Electrical Property
Superconductor  
Unknown  
Resistivity
52.80 nΩ·m  
99+
Not Available  
Electrical Conductivity
0.19 106/cm Ω  
10
Not Available  
Electron Affinity
78.60 kJ/mol  
13
Not Available  
Thermal Properties
Specific Heat
0.13 J/(kg K)  
39
Not Available  
Molar Heat Capacity
24.27 J/mol·K  
99+
Not Available  
Thermal Conductivity
173.00 W/m·K  
7
Not Available  
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
4.50 µm/(m·K)  
99+
Not Available  
Enthalpy
  
  
Enthalpy of Vaporization
799.10 kJ/mol  
1
Not Available  
Enthalpy of Fusion
35.23 kJ/mol  
1
Not Available  
Enthalpy of Atomization
837.00 kJ/mol  
1
Not Available  
Standard Molar Entropy
32.60 J/mol.K  
99+
Not Available  
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