Properties of Gallium and Cobalt
Melting Point
1,495.00 °C
  
29
Boiling Point
2,403.00 °C
  
99+
2,870.00 °C
  
34
Hardness
  
  
Vickers Hardness
Not Available
  
1,043.00 MPa
  
11
Optical Properties
  
  
Refractive Index
Not Available
  
Not Available
  
Reflectivity
Not Available
  
Speed of Sound
2,740.00 m/s
  
31
4,720.00 m/s
  
14
Allotropes
No
  
Yes
  
α Allotropes
Not Available
  
β Allotropes
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Ga
  
Co
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
578.80 kJ/mol
  
99+
760.40 kJ/mol
  
19
2nd Energy Level
1,979.30 kJ/mol
  
13
1,648.00 kJ/mol
  
31
3rd Energy Level
2,963.00 kJ/mol
  
28
3,232.00 kJ/mol
  
22
Electrochemical Equivalent
0.87 g/amp-hr
  
99+
1.10 g/amp-hr
  
99+
Other Chemical Properties
Density
  
  
Density At Room Temperature
5.91 g/cm3
  
99+
4.51 g/cm3
  
99+
Density When Liquid (at m.p.)
6.10 g/cm3
  
99+
4.11 g/cm3
  
99+
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Vapor Pressure at 2000 K
Not Available
  
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Other Mechanical Properties
NA
  
Symbol
Ga
  
Co
  
Period Number
4
  
4
  
Atomic Volume
11.80 cm3/mol
  
99+
10.64 cm3/mol
  
99+
Electron Configuration
[Ar] 3d10 4s2 4p1
  
[Ar] 3d2 4s2
  
Valence Electron Potential
69.70 (-eV)
  
19
95.20 (-eV)
  
10
Atom
  
  
Crystal Lattice
ORTH-Crystal-Structure-of-Gallium.jpg#100
  
HCP-Crystal-Structure-of-Cobalt.jpg#100
  
Radius of an Atom
  
  
Lattice Angles
π/2, π/2, π/2
  
π/2, π/2, 2 π/3
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Adjacent Atomic Numbers
  
  
Electrical Properties
  
  
Resistivity
270.00 nΩ·m
  
15
420.00 nΩ·m
  
12
Electrical Conductivity
0.07 106/cm Ω
  
29
0.02 106/cm Ω
  
99+
Electron Affinity
28.90 kJ/mol
  
31
7.60 kJ/mol
  
37
Magnetic Characteristics
  
  
Permeability
Not Available
  
Not Available
  
Susceptibility
Not Available
  
Not Available
  
Specific Heat
0.37 J/(kg K)
  
16
0.52 J/(kg K)
  
9
Thermal Conductivity
40.60 W/m·K
  
34
21.90 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Molar Heat Capacity
25.86 J/mol·K
  
35
25.06 J/mol·K
  
99+
Thermal Expansion
18.00 µm/(m·K)
  
24
8.60 µm/(m·K)
  
99+
Standard Molar Entropy
40.80 J/mol.K
  
38
27.30 J/mol.K
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
256.10 kJ/mol
  
36
429.00 kJ/mol
  
15
Enthalpy of Fusion
5.59 kJ/mol
  
99+
15.48 kJ/mol
  
19
Enthalpy of Atomization
276.10 kJ/mol
  
39
468.60 kJ/mol
  
15