Properties of Cesium and Platinum
Melting Point
1,772.00 °C
  
16
Boiling Point
3,827.00 °C
  
15
Hardness
  
  
Vickers Hardness
Not Available
  
Optical Properties
  
  
Refractive Index
Not Available
  
Not Available
  
Reflectivity
Not Available
  
Speed of Sound
Not Available
  
2,800.00 m/s
  
29
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Cs
  
Pt
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
375.70 kJ/mol
  
99+
870.00 kJ/mol
  
10
2nd Energy Level
2,234.30 kJ/mol
  
8
1,791.00 kJ/mol
  
21
3rd Energy Level
3,400.00 kJ/mol
  
16
Not Available
  
Electrochemical Equivalent
4.96 g/amp-hr
  
3
1.82 g/amp-hr
  
35
Other Chemical Properties
Density
  
  
Density At Room Temperature
1.93 g/cm3
  
99+
21.45 g/cm3
  
11
Density When Liquid (at m.p.)
1.84 g/cm3
  
99+
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Not Available
  
Vapor Pressure at 2000 K
Not Available
  
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
Symbol
Cs
  
Pt
  
Period Number
6
  
6
  
Atomic Weight
132.91 amu
  
99+
Atomic Volume
71.07 cm3/mol
  
1
9.09 cm3/mol
  
99+
Electron Configuration
[Xe] 6s1
  
[Xe] 4f14 5d9 6s1
  
Valence Electron Potential
8.62 (-eV)
  
99+
392.42 (-eV)
  
1
Atom
  
  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
  
FCC-Crystal-Structure-of-Platinum.jpg#100
  
Radius of an Atom
  
  
Lattice Angles
π/2, π/2, π/2
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Adjacent Atomic Numbers
  
  
Electrical Properties
  
  
Resistivity
205.00 nΩ·m
  
17
105.00 nΩ·m
  
30
Electrical Conductivity
0.05 106/cm Ω
  
35
0.10 106/cm Ω
  
21
Electron Affinity
45.50 kJ/mol
  
25
205.30 kJ/mol
  
2
Magnetic Characteristics
  
  
Permeability
Not Available
  
Susceptibility
Not Available
  
Not Available
  
Specific Heat
0.24 J/(kg K)
  
23
0.13 J/(kg K)
  
39
Thermal Conductivity
35.90 W/m·K
  
36
71.60 W/m·K
  
24
Critical Temperature
Not Available
  
Molar Heat Capacity
32.21 J/mol·K
  
4
25.86 J/mol·K
  
35
Thermal Expansion
97.00 µm/(m·K)
  
1
8.80 µm/(m·K)
  
99+
Standard Molar Entropy
85.20 J/mol.K
  
3
41.60 J/mol.K
  
36
Enthalpy
  
  
Enthalpy of Vaporization
65.90 kJ/mol
  
99+
510.50 kJ/mol
  
11
Enthalpy of Fusion
2.10 kJ/mol
  
99+
19.70 kJ/mol
  
12
Enthalpy of Atomization
78.20 kJ/mol
  
99+
565.00 kJ/mol
  
11