Properties of Cerium and Molybdenum
Boiling Point
3,257.00 °C
  
23
Hardness
  
  
Brinell Hardness
186.00 MPa
  
99+
1,370.00 MPa
  
7
Vickers Hardness
1,400.00 MPa
  
6
Optical Properties
  
  
Refractive Index
Not Available
  
Not Available
  
Reflectivity
Not Available
  
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 Formula
Ce
  
Mo
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
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+
Other Chemical Properties
Density
  
  
Density At Room Temperature
6.77 g/cm3
  
99+
10.28 g/cm3
  
36
Density When Liquid (at m.p.)
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Elasticity properties
  
  
Other Mechanical Properties
Symbol
Ce
  
Mo
  
Group Number
Not Available
  
Period Number
6
  
5
  
Atomic Weight
140.12 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
  
  
Crystal Lattice
DHCP-Crystal-Structure-of-Cerium.jpg#100
  
BCC-Crystal-Structure-.jpg#100
  
Radius of an Atom
  
  
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
  
  
Electrical Properties
  
  
Resistivity
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
Magnetic Characteristics
  
  
Permeability
Not Available
  
Not Available
  
Susceptibility
Not Available
  
Not Available
  
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