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Properties of Cerium and Molybdenum


Properties of Molybdenum & Cerium


Physical Properties

Melting Point
795.00 °C   
99+
2,617.00 °C   
5

Boiling Point
3,257.00 °C   
23
4,612.00 °C   
9

Hardness
  
  

Mohs Hardness
2.50   
14
5.50   
7

Brinell Hardness
186.00 MPa   
99+
1,370.00 MPa   
7

Vickers Hardness
210.00 MPa   
32
1,400.00 MPa   
6

Optical Properties
  
  

Refractive Index
Not Available   
Not Available   

Reflectivity
Not Available   
58.00 %   
15

Speed of Sound
2,100.00 m/s   
99+
5,400.00 m/s   
6

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
Ce   
Mo   

Isotopes
  
  

Known Isotopes
30   
9
25   
14

Electronegativity
  
  

Pauling Electronegativity
1.12   
99+
2.16   
5

Sanderson Electronegativity
Not Available   
1.15   
19

Allred Rochow Electronegativity
1.08   
31
1.30   
24

Mulliken-Jaffe Electronegativity
Not Available   
Not Available   

Allen Electronegativity
Not Available   
2.16   
3

Electropositivity
  
  

Pauling Electropositivity
2.88   
11
1.84   
99+

Ionization Energies
  
  

1st Energy Level
534.40 kJ/mol   
99+
684.30 kJ/mol   
37

2nd Energy Level
1,050.00 kJ/mol   
99+
1,560.00 kJ/mol   
37

3rd Energy Level
1,949.00 kJ/mol   
99+
2,618.00 kJ/mol   
99+

Electrochemical Equivalent
1.74 g/amp-hr   
99+
0.89 g/amp-hr   
99+

Electron Work Function
2.84 eV   
39
4.60 eV   
12

Other Chemical Properties
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
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
  
?
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
  

Mechanical Properties

Density
  
  

Density At Room Temperature
6.77 g/cm3   
99+
10.28 g/cm3   
36

Density When Liquid (at m.p.)
6.55 g/cm3   
38
9.33 g/cm3   
20

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
34
Not Available   

Vapor Pressure at 2000 K
1.04 (Pa)   
13
0.00 (Pa)   
26

Tensile Strength
Not Available   
324.00 MPa   
13

Viscosity
Not Available   
Not Available   

Elasticity properties
  
  

Shear Modulus
13.50 GPa   
99+
126.00 GPa   
8

Bulk Modulus
21.50 GPa   
99+
230.00 GPa   
6

Young's Modulus
33.60 GPa   
99+
329.00 GPa   
6

Poisson Ratio
0.24   
27
0.31   
13

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, 
?
Malleability of metals defines their ability to deform under compressive stress; this is often characterized by the metals ability to form a thin sheet by hammering or rolling.Malleable
  
?
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
  

Periodic Table

Symbol
Ce   
Mo   

Group Number
Not Available   
6   
12

Period Number
6   
5   

Block
?
The f-block is in the center-left of a 32-column periodic table but in the footnoted appendage of 18-column tables. These elements are not generally considered as part of any group. They are often called inner transition metals.f 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
?
Total 15 metals are included in Lanthanide series from Lanthanum to Lutetium. Lanthanide series is located under f and d block of the periodic table.Lanthanide
  
?
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
58   
99+
42   
99+

Atomic Weight
140.12 amu   
99+
95.95 amu   
99+

Atomic Volume
20.67 cm3/mol   
17
9.40 cm3/mol   
99+

Electron Configuration
[Xe] 4f1 5d1 6s2   
[Kr] 4d5 5s1   

Valence Electron Potential
41.78 (-eV)   
99+
88.60 (-eV)   
13

Atom
  
  

Number of Protons
58   
99+
42   
99+

Number of Neutrons
82   
99+
54   
99+

Number of Electrons
58   
99+
42   
99+

Crystal Structure
?
In crystallography, the hexagonal crystal structure and its double hexagonal crystal structure is one of the 7 crystal structure, The hexagonal lattice system consists of just one Bravais lattice type: the hexagonal shape.Double Hexagonal Close Packed (DHCP)
  
?
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
DHCP-Crystal-Structure-of-Cerium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Radius of an Atom
  
  

Atomic Radius
181.80 pm   
12
139.00 pm   
39

Covalent Radius
204.00 pm   
8
154.00 pm   
32

Van der Waals Radius
235.00 pm   
17
200.00 pm   
28

Lattice Constant
362.00 pm   
34
314.70 pm   
99+

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

Adjacent Atomic Numbers
  
  

Next Element
Technetium
  

Previous Element
Lanthanum
  
Niobium
  

Magnetic Properties

Electrical Properties
  
  

Resistivity
828.00 nΩ·m   
3
53.40 nΩ·m   
99+

Electrical Conductivity
0.01 106/cm Ω   
99+
0.19 106/cm Ω   
11

Electron Affinity
50.00 kJ/mol   
21
71.90 kJ/mol   
14

Electrical Property
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor
  
?
Semiconductor metals have conductivity between that of a conductor and an insulator.Semiconductor
  

Magnetic Characteristics
  
  

Specific Gravity
6.77   
99+
10.22   
27

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
  
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic
  

Permeability
Not Available   
Not Available   

Susceptibility
Not Available   
Not Available   

Thermal Properties

Specific Heat
0.19 J/(kg K)   
32
0.25 J/(kg K)   
21

Thermal Conductivity
11.30 W/m·K   
99+
138.00 W/m·K   
12

Critical Temperature
Not Available   
Not Available   

Molar Heat Capacity
26.94 J/mol·K   
23
24.06 J/mol·K   
99+

Thermal Expansion
6.30 µm/(m·K)   
99+
4.80 µm/(m·K)   
99+

Standard Molar Entropy
72.00 J/mol.K   
12
28.70 J/mol.K   
99+

Enthalpy
  
  

Enthalpy of Vaporization
414.00 kJ/mol   
16
594.10 kJ/mol   
8

Enthalpy of Fusion
5.46 kJ/mol   
99+
27.61 kJ/mol   
5

Enthalpy of Atomization
381.00 kJ/mol   
23
653.00 kJ/mol   
7

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