Properties of Platinum and Indium
Melting Point
1,772.00 °C
  
16
Boiling Point
3,827.00 °C
  
15
2,000.00 °C
  
99+
Hardness
  
  
Vickers Hardness
Not Available
  
Optical Properties
  
  
Refractive Index
Not Available
  
Not Available
  
Reflectivity
Not Available
  
Speed of Sound
2,800.00 m/s
  
29
1,215.00 m/s
  
99+
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Pt
  
In
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
870.00 kJ/mol
  
10
558.30 kJ/mol
  
99+
2nd Energy Level
1,791.00 kJ/mol
  
21
1,820.70 kJ/mol
  
18
3rd Energy Level
Not Available
  
2,704.00 kJ/mol
  
39
Electrochemical Equivalent
1.82 g/amp-hr
  
35
1.43 g/amp-hr
  
99+
Other Chemical Properties
Density
  
  
Density At Room Temperature
21.45 g/cm3
  
11
7.31 g/cm3
  
99+
Density When Liquid (at m.p.)
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Vapor Pressure at 2000 K
Not Available
  
Viscosity
Not Available
  
Not Available
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
Symbol
Pt
  
In
  
Period Number
6
  
5
  
Atomic Weight
114.82 amu
  
99+
Atomic Volume
9.09 cm3/mol
  
99+
15.70 cm3/mol
  
33
Electron Configuration
[Xe] 4f14 5d9 6s1
  
[Kr] 4d10 5s2 5p1
  
Valence Electron Potential
392.42 (-eV)
  
1
54.00 (-eV)
  
25
Atom
  
  
Crystal Lattice
FCC-Crystal-Structure-of-Platinum.jpg#100
  
TETR-Crystal-Structure-of-Indium.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
105.00 nΩ·m
  
30
Electrical Conductivity
0.10 106/cm Ω
  
21
0.12 106/cm Ω
  
17
Electron Affinity
205.30 kJ/mol
  
2
28.90 kJ/mol
  
31
Magnetic Characteristics
  
  
Permeability
Not Available
  
Susceptibility
Not Available
  
Not Available
  
Specific Heat
0.13 J/(kg K)
  
39
0.23 J/(kg K)
  
27
Thermal Conductivity
71.60 W/m·K
  
24
81.80 W/m·K
  
21
Critical Temperature
Not Available
  
Not Available
  
Molar Heat Capacity
25.86 J/mol·K
  
35
26.74 J/mol·K
  
25
Thermal Expansion
8.80 µm/(m·K)
  
99+
32.10 µm/(m·K)
  
9
Standard Molar Entropy
41.60 J/mol.K
  
36
57.80 J/mol.K
  
22
Enthalpy
  
  
Enthalpy of Vaporization
510.50 kJ/mol
  
11
226.40 kJ/mol
  
40
Enthalpy of Fusion
19.70 kJ/mol
  
12
3.28 kJ/mol
  
99+
Enthalpy of Atomization
565.00 kJ/mol
  
11
242.70 kJ/mol
  
99+