Properties of Manganese and Vanadium
Melting Point
1,245.00 °C
  
37
1,890.00 °C
  
13
Boiling Point
1,962.00 °C
  
99+
3,380.00 °C
  
20
Hardness
  
  
Brinell Hardness
196.00 MPa
  
99+
Vickers Hardness
Not Available
  
Optical Properties
  
  
Refractive Index
Not Available
  
Not Available
  
Reflectivity
Not Available
  
Speed of Sound
5,150.00 m/s
  
7
4,560.00 m/s
  
17
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Mn
  
V
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
717.30 kJ/mol
  
30
650.90 kJ/mol
  
99+
2nd Energy Level
1,509.00 kJ/mol
  
39
1,414.00 kJ/mol
  
99+
3rd Energy Level
3,248.00 kJ/mol
  
21
2,830.00 kJ/mol
  
35
Electrochemical Equivalent
0.29 g/amp-hr
  
99+
0.38 g/amp-hr
  
99+
Other Chemical Properties
Density
  
  
Density At Room Temperature
7.21 g/cm3
  
99+
6.00 g/cm3
  
99+
Density When Liquid (at m.p.)
5.95 g/cm3
  
99+
5.50 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
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
NA
  
Symbol
Mn
  
V
  
Period Number
4
  
4
  
Atomic Volume
1.39 cm3/mol
  
99+
8.78 cm3/mol
  
99+
Electron Configuration
[Ar] 3d5 4s2
  
[Ar] 3d3 4s2
  
Valence Electron Potential
220.00 (-eV)
  
2
120.00 (-eV)
  
6
Atom
  
  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
  
BCC-Crystal-Structure-.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
197.00 nΩ·m
  
19
Electrical Conductivity
0.01 106/cm Ω
  
99+
0.05 106/cm Ω
  
35
Electron Affinity
0.00 kJ/mol
  
40
50.60 kJ/mol
  
20
Magnetic Characteristics
  
  
Permeability
Not Available
  
Not Available
  
Susceptibility
Not Available
  
Not Available
  
Specific Heat
0.48 J/(kg K)
  
11
0.49 J/(kg K)
  
10
Thermal Conductivity
7.81 W/m·K
  
99+
30.70 W/m·K
  
39
Critical Temperature
Not Available
  
Not Available
  
Molar Heat Capacity
26.32 J/mol·K
  
29
24.89 J/mol·K
  
99+
Thermal Expansion
21.70 µm/(m·K)
  
21
8.40 µm/(m·K)
  
99+
Standard Molar Entropy
32.00 J/mol.K
  
99+
28.90 J/mol.K
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
219.70 kJ/mol
  
99+
458.60 kJ/mol
  
14
Enthalpy of Fusion
14.64 kJ/mol
  
23
17.57 kJ/mol
  
14
Enthalpy of Atomization
280.30 kJ/mol
  
38
514.60 kJ/mol
  
13