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Dubnium vs Tungsten

Dubnium
Tungsten
Tungsten vs Dubnium


Periodic Table
Symbol
Db   
W   
Group Number
5   
13
6   
12
Period Number
7   
6   
Block
d block   
d block   
Element Family
Transition Metal   
Transition Metal   
CAS Number
53850354   
14
7440337   
99+
Space Group Name
Not Available   
Im_ 3m   
Space Group Number
Not Available   
229.00   
1
Facts
Interesting Facts
  • IUPAC allotted a temporary name to Dubnium metal as “ Unnilpentium”.
  • In the production of Dubnium, thermal gradient chromatography is used.
  
  • Tungsten element has the second highest melting point.
  • Pure tungsten can easily cut down with the help of hacksaw.
  
Sources
Produced by Bombarding Am243 with Ne22, Synthetically Produced   
Earth's crust, Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Joint Institute for Nuclear Research   
Not Available   
Discovery
In 1968   
In 1781   
Abundance
  
  
Abundance In Universe
Not Available   
5 * 10-8 %   
27
Abundance In Sun
~-9999 %   
~0.0000004 %   
23
Abundance In Meteorites
Not Available   
0.00 %   
39
Abundance In Earth's Crust
Not Available   
0.00 %   
39
Abundance In Oceans
Not Available   
0.00 %   
18
Uses
Uses & Benefits
  • Currently known uses of Dubnium metal are limited to research purpose only.
  
  • 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.
  
Industrial Uses
NA   
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
NA   
Other Uses
Research Purposes   
Alloys   
Biological Properties
  
  
Toxicity
Unknown   
Non Toxic   
Present in Human Body
No   
Yes   
In Blood
0.00 Blood/mg dm-3   
37
0.00 Blood/mg dm-3   
31
In Bone
0.00 p.p.m.   
36
0.00 p.p.m.   
35
Physical Properties
Melting Point
Not Available   
3,410.00 °C   
1
Boiling Point
Not Available   
5,660.00 °C   
1
Appearance
  
  
Physical State
Solid   
Solid   
Color
Unknown   
Grayish White   
Luster
Unknown Luster   
Lustrous   
Hardness
  
  
Mohs Hardness
Not Available   
7.50   
2
Brinell Hardness
Not Available   
2,000.00 MPa   
4
Vickers Hardness
Not Available   
3,430.00 MPa   
1
Speed of Sound
Not Available   
4,620.00 m/s   
16
Optical Properties
  
  
Reflectivity
Not Available   
62.00 %   
13
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
Db   
W   
Isotopes
  
  
Known Isotopes
10   
28
33   
6
Electronegativity
  
  
Pauling Electronegativity
Not Available   
2.36   
2
Sanderson Electronegativity
Not Available   
0.98   
23
Allred Rochow Electronegativity
Not Available   
1.40   
19
Allen Electronegativity
Not Available   
1.47   
29
Electropositivity
  
  
Pauling Electropositivity
Not Available   
1.64   
99+
Ionization Energies
  
  
1st Energy Level
664.80 kJ/mol   
38
770.00 kJ/mol   
16
2nd Energy Level
1,546.70 kJ/mol   
38
1,700.00 kJ/mol   
29
3rd Energy Level
2,378.40 kJ/mol   
99+
Not Available   
4th Energy Level
3,298.80 kJ/mol   
99+
Not Available   
5th Energy Level
4,305.20 kJ/mol   
39
Not Available   
Electrochemical Equivalent
Not Available   
1.14 g/amp-hr   
99+
Electron Work Function
Not Available   
4.55 eV   
13
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Solubility   
Atomic Properties
Atomic Number
105   
13
74   
99+
Electron Configuration
[Rn] 5f14 6d3 7s2   
[Xe] 4f14 5d4 6s2   
Crystal Structure
Body Centered Cubic (BCC)   
Body Centered Cubic (BCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
105   
13
74   
99+
Number of Neutrons
157   
7
110   
27
Number of Electrons
105   
13
74   
99+
Radius of an Atom
  
  
Atomic Radius
139.00 pm   
39
139.00 pm   
39
Covalent Radius
149.00 pm   
35
162.00 pm   
29
Van der Waals Radius
Not Available   
200.00 pm   
28
Atomic Weight
268.00 amu   
10
183.84 amu   
37
Atomic Volume
Not Available   
9.53 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Rutherfordium
  
Tantalum
  
Next Element
Seaborgium
  
Rhenium
  
Valence Electron Potential
Not Available   
140.00 (-eV)   
5
Lattice Constant
Not Available   
316.52 pm   
99+
Lattice Angles
NA   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
29.30 g/cm3   
5
19.25 g/cm3   
16
Density When Liquid (at m.p.)
Not Available   
17.60 g/cm3   
5
Tensile Strength
Not Available   
370.00 MPa   
10
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available   
0.00 (Pa)   
32
Elasticity properties
  
  
Shear Modulus
Not Available   
161.00 GPa   
5
Bulk Modulus
Not Available   
310.00 GPa   
4
Young's Modulus
Not Available   
411.00 GPa   
4
Poisson Ratio
Not Available   
0.28   
17
Other Mechanical Properties
Unknown   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
Not Available   
19.22   
9
Magnetic Ordering
Unknown   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Unknown   
Superconductor   
Resistivity
Not Available   
52.80 nΩ·m   
99+
Electrical Conductivity
Not Available   
0.19 106/cm Ω   
10
Electron Affinity
Not Available   
78.60 kJ/mol   
13
Thermal Properties
Specific Heat
Not Available   
0.13 J/(kg K)   
39
Molar Heat Capacity
Not Available   
24.27 J/mol·K   
99+
Thermal Conductivity
Not Available   
173.00 W/m·K   
7
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
Not Available   
4.50 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
799.10 kJ/mol   
1
Enthalpy of Fusion
Not Available   
35.23 kJ/mol   
1
Enthalpy of Atomization
Not Available   
837.00 kJ/mol   
1
Standard Molar Entropy
Not Available   
32.60 J/mol.K   
99+
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