Properties of Cerium and Lithium
Boiling Point
3,257.00 °C
  
23
1,347.00 °C
  
99+
Hardness
  
  
Brinell Hardness
186.00 MPa
  
99+
Vickers Hardness
Not Available
  
Optical Properties
  
  
Refractive Index
Not Available
  
Not Available
  
Reflectivity
Not Available
  
Not Available
  
Speed of Sound
2,100.00 m/s
  
99+
6,000.00 m/s
  
3
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Ce
  
Li
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
534.40 kJ/mol
  
99+
520.20 kJ/mol
  
99+
2nd Energy Level
1,050.00 kJ/mol
  
99+
7,298.10 kJ/mol
  
3
3rd Energy Level
1,949.00 kJ/mol
  
99+
11,815.00 kJ/mol
  
4
Electrochemical Equivalent
1.74 g/amp-hr
  
99+
0.26 g/amp-hr
  
99+
Other Chemical Properties
Density
  
  
Density At Room Temperature
6.77 g/cm3
  
99+
0.53 g/cm3
  
99+
Density When Liquid (at m.p.)
0.51 g/cm3
  
99+
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available
  
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Elasticity properties
  
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
NA
  
Symbol
Ce
  
Li
  
Group Number
Not Available
  
Period Number
6
  
2
  
Atomic Weight
140.12 amu
  
99+
Atomic Volume
20.67 cm3/mol
  
17
13.10 cm3/mol
  
39
Electron Configuration
[Xe] 4f1 5d1 6s2
  
[He] 2s1
  
Valence Electron Potential
41.78 (-eV)
  
99+
19.00 (-eV)
  
99+
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
  
  
Previous Element
  
Electrical Properties
  
  
Electrical Conductivity
0.01 106/cm Ω
  
99+
0.11 106/cm Ω
  
19
Electron Affinity
50.00 kJ/mol
  
21
59.60 kJ/mol
  
16
Magnetic Characteristics
  
  
Permeability
Not Available
  
Not Available
  
Susceptibility
Not Available
  
Not Available
  
Specific Heat
0.19 J/(kg K)
  
32
3.60 J/(kg K)
  
1
Thermal Conductivity
11.30 W/m·K
  
99+
84.80 W/m·K
  
20
Critical Temperature
Not Available
  
Molar Heat Capacity
26.94 J/mol·K
  
23
24.86 J/mol·K
  
99+
Thermal Expansion
6.30 µm/(m·K)
  
99+
46.00 µm/(m·K)
  
7
Standard Molar Entropy
72.00 J/mol.K
  
12
29.10 J/mol.K
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
414.00 kJ/mol
  
16
134.70 kJ/mol
  
99+
Enthalpy of Fusion
5.46 kJ/mol
  
99+
3.00 kJ/mol
  
99+
Enthalpy of Atomization
381.00 kJ/mol
  
23
160.70 kJ/mol
  
99+