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Properties of Molybdenum and Dubnium

Molybdenum
Dubnium
Properties of Dubnium & Molybdenum


Physical Properties
Melting Point
2,617.00 °C   
5
Not Available   
Boiling Point
4,612.00 °C   
9
Not Available   
Hardness
  
  
Mohs Hardness
5.50   
7
Not Available   
Brinell Hardness
1,370.00 MPa   
7
Not Available   
Vickers Hardness
1,400.00 MPa   
6
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
58.00 %   
15
Not Available   
Speed of Sound
5,400.00 m/s   
6
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
Mo   
Db   
Isotopes
  
  
Known Isotopes
25   
14
10   
28
Electronegativity
  
  
Pauling Electronegativity
2.16   
5
Not Available   
Sanderson Electronegativity
1.15   
19
Not Available   
Allred Rochow Electronegativity
1.30   
24
Not Available   
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
2.16   
3
Not Available   
Electropositivity
  
  
Pauling Electropositivity
1.84   
99+
Not Available   
Ionization Energies
  
  
1st Energy Level
684.30 kJ/mol   
37
664.80 kJ/mol   
38
2nd Energy Level
1,560.00 kJ/mol   
37
1,546.70 kJ/mol   
38
3rd Energy Level
2,618.00 kJ/mol   
99+
2,378.40 kJ/mol   
99+
Electrochemical Equivalent
0.89 g/amp-hr   
99+
Not Available   
Electron Work Function
4.60 eV   
12
Not Available   
Other Chemical Properties
?
Anti-corrosion metals have the protection on their surfaces which protect them from corroding in corrosive environments.Anti Corrosion, 
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes, 
?
Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility   
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces.Radioactivity   
Mechanical Properties
Density
  
  
Density At Room Temperature
10.28 g/cm3   
36
29.30 g/cm3   
5
Density When Liquid (at m.p.)
9.33 g/cm3   
20
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
Not Available   
Vapor Pressure at 2000 K
0.00 (Pa)   
26
Not Available   
Tensile Strength
324.00 MPa   
13
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
126.00 GPa   
8
Not Available   
Bulk Modulus
230.00 GPa   
6
Not Available   
Young's Modulus
329.00 GPa   
6
Not Available   
Poisson Ratio
0.31   
13
Not Available   
Other Mechanical Properties
?
Ductility of metals defines their ability to deform under tensile stress; this is often characterized by the metals ability to be stretched into a wire.Ductile, 
?
Weldability of metals defines their ability to be welded.This property of metals also known as joinability.Weldable   
Unknown   
Periodic Table
Symbol
Mo   
Db   
Group Number
6   
12
5   
13
Period Number
5   
7   
Block
?
The d-block is on the middle of the periodic table and includes elements from columns 3 through 12. These elements are also known as the transition metals because they show a transitivity in their properties i.e. they show a trend in their properties.d block   
?
The d-block is on the middle of the periodic table and includes elements from columns 3 through 12. These elements are also known as the transition metals because they show a transitivity in their properties i.e. they show a trend in their properties.d block   
Element Family
?
What is Transition Metal? All transition metals are placed under the d-block from group number 3 to 12. Transition metals show characteristics like malleability, ductility and are good conductor of electricity.Transition Metal   
?
What is Transition Metal? All transition metals are placed under the d-block from group number 3 to 12. Transition metals show characteristics like malleability, ductility and are good conductor of electricity.Transition Metal   
Atomic Properties
Atomic Number
42   
99+
105   
13
Atomic Weight
95.95 amu   
99+
268.00 amu   
10
Atomic Volume
9.40 cm3/mol   
99+
Not Available   
Electron Configuration
[Kr] 4d5 5s1   
[Rn] 5f14 6d3 7s2   
Valence Electron Potential
88.60 (-eV)   
13
Not Available   
Atom
  
  
Number of Protons
42   
99+
105   
13
Number of Neutrons
54   
99+
157   
7
Number of Electrons
42   
99+
105   
13
Crystal Structure
?
BCC is a basis type of cubic crystal structure. In crystallography, the cubic crystals structure is a crystal system where the unit cell has a cube shaped structure. This is one of the simplest crystal structure found in crystals of metal.Body Centered Cubic (BCC)   
?
BCC is a basis type of cubic crystal structure. In crystallography, the cubic crystals structure is a crystal system where the unit cell has a cube shaped structure. This is one of the simplest crystal structure found in crystals of metal.Body Centered Cubic (BCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Radius of an Atom
  
  
Atomic Radius
139.00 pm   
39
139.00 pm   
39
Covalent Radius
154.00 pm   
32
149.00 pm   
35
Van der Waals Radius
200.00 pm   
28
Not Available   
Lattice Constant
314.70 pm   
99+
Not Available   
Lattice Angles
π/2, π/2, π/2   
NA   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Technetium
  
Seaborgium
  
Previous Element
Niobium
  
Rutherfordium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
53.40 nΩ·m   
99+
Not Available   
Electrical Conductivity
0.19 106/cm Ω   
11
Not Available   
Electron Affinity
71.90 kJ/mol   
14
Not Available   
Electrical Property
?
Semiconductor metals have conductivity between that of a conductor and an insulator.Semiconductor   
Unknown   
Magnetic Characteristics
  
  
Specific Gravity
10.22   
27
Not Available   
Magnetic Ordering
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic   
Unknown   
Permeability
Not Available   
Not Available   
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.25 J/(kg K)   
21
Not Available   
Thermal Conductivity
138.00 W/m·K   
12
Not Available   
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
24.06 J/mol·K   
99+
Not Available   
Thermal Expansion
4.80 µm/(m·K)   
99+
Not Available   
Standard Molar Entropy
28.70 J/mol.K   
99+
Not Available   
Enthalpy
  
  
Enthalpy of Vaporization
594.10 kJ/mol   
8
Not Available   
Enthalpy of Fusion
27.61 kJ/mol   
5
Not Available   
Enthalpy of Atomization
653.00 kJ/mol   
7
Not Available   
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