Properties of Gold and Indium
Melting Point
1,064.43 °C
  
99+
Boiling Point
2,807.00 °C
  
36
2,000.00 °C
  
99+
Hardness
  
  
Brinell Hardness
194.00 MPa
  
99+
Vickers Hardness
Not Available
  
Optical Properties
  
  
Refractive Index
Not Available
  
Not Available
  
Reflectivity
Not Available
  
Speed of Sound
2,030.00 m/s
  
99+
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
Au
  
In
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
890.10 kJ/mol
  
8
558.30 kJ/mol
  
99+
2nd Energy Level
1,980.00 kJ/mol
  
12
1,820.70 kJ/mol
  
18
3rd Energy Level
Not Available
  
2,704.00 kJ/mol
  
39
Electrochemical Equivalent
2.45 g/amp-hr
  
21
1.43 g/amp-hr
  
99+
Other Chemical Properties
Density
  
  
Density At Room Temperature
19.30 g/cm3
  
15
7.31 g/cm3
  
99+
Density When Liquid (at m.p.)
Vapor Pressure
  
  
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
Au
  
In
  
Period Number
6
  
5
  
Atomic Weight
114.82 amu
  
99+
Atomic Volume
10.20 cm3/mol
  
99+
15.70 cm3/mol
  
33
Electron Configuration
[Xe] 4f14 5d10 6s1
  
[Kr] 4d10 5s2 5p1
  
Valence Electron Potential
43.40 (-eV)
  
99+
54.00 (-eV)
  
25
Atom
  
  
Crystal Lattice
FCC-Crystal-Structure-of-Gold.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
  
Adjacent Atomic Numbers
  
  
Electrical Properties
  
  
Electrical Conductivity
0.45 106/cm Ω
  
3
0.12 106/cm Ω
  
17
Electron Affinity
222.80 kJ/mol
  
1
28.90 kJ/mol
  
31
Magnetic Characteristics
  
  
Permeability
Not Available
  
Not Available
  
Susceptibility
Not Available
  
Not Available
  
Specific Heat
0.13 J/(kg K)
  
39
0.23 J/(kg K)
  
27
Thermal Conductivity
318.00 W/m·K
  
3
81.80 W/m·K
  
21
Critical Temperature
Not Available
  
Not Available
  
Molar Heat Capacity
25.42 J/mol·K
  
40
26.74 J/mol·K
  
25
Thermal Expansion
14.20 µm/(m·K)
  
26
32.10 µm/(m·K)
  
9
Standard Molar Entropy
47.40 J/mol.K
  
32
57.80 J/mol.K
  
22
Enthalpy
  
  
Enthalpy of Vaporization
324.40 kJ/mol
  
27
226.40 kJ/mol
  
40
Enthalpy of Fusion
12.55 kJ/mol
  
27
3.28 kJ/mol
  
99+
Enthalpy of Atomization
364.00 kJ/mol
  
25
242.70 kJ/mol
  
99+