Properties of Tungsten and Lawrencium
Melting Point
1,627.00 °C
  
20
Boiling Point
Not Available
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
2,000.00 MPa
  
4
Not Available
  
Vickers Hardness
3,430.00 MPa
  
1
Not Available
  
Optical Properties
  
  
Refractive Index
Not Available
  
Not Available
  
Reflectivity
Not Available
  
Speed of Sound
4,620.00 m/s
  
16
Not Available
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
W
  
Lr
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Not Available
  
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Not Available
  
Mulliken-Jaffe Electronegativity
Not Available
  
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Not Available
  
Ionization Energies
  
  
1st Energy Level
770.00 kJ/mol
  
16
470.00 kJ/mol
  
99+
2nd Energy Level
1,700.00 kJ/mol
  
29
1,428.00 kJ/mol
  
99+
3rd Energy Level
Not Available
  
2,228.00 kJ/mol
  
99+
Electrochemical Equivalent
1.14 g/amp-hr
  
99+
3.23 g/amp-hr
  
11
Electron Work Function
Not Available
  
Other Chemical Properties
Density
  
  
Density At Room Temperature
19.25 g/cm
3
  
16
Not Available
  
Density When Liquid (at m.p.)
Not Available
  
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
  
Bulk Modulus
Not Available
  
Young's Modulus
Not Available
  
Other Mechanical Properties
Unknown
  
Symbol
W
  
Lr
  
Group Number
Not Available
  
Period Number
6
  
7
  
Atomic Volume
9.53 cm3/mol
  
99+
Not Available
  
Electron Configuration
[Xe] 4f14 5d4 6s2
  
[Rn] 5f14 7s2 7p1
  
Valence Electron Potential
140.00 (-eV)
  
5
Not Available
  
Atom
  
  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
  
BCC-Crystal-Structure-.jpg#100
  
Radius of an Atom
  
  
Atomic Radius
Not Available
  
Covalent Radius
Not Available
  
Lattice Constant
Not Available
  
Lattice Angles
π/2, π/2, π/2
  
NA
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Adjacent Atomic Numbers
  
  
Electrical Properties
  
  
Resistivity
52.80 nΩ·m
  
99+
Not Available
  
Electrical Conductivity
0.19 10
6/cm Ω
  
10
Not Available
  
Electron Affinity
78.60 kJ/mol
  
13
Not Available
  
Electrical Property
Unknown
  
Magnetic Characteristics
  
  
Specific Gravity
Not Available
  
Magnetic Ordering
Unknown
  
Permeability
Not Available
  
Not Available
  
Susceptibility
Not Available
  
Not Available
  
Specific Heat
0.13 J/(kg K)
  
39
Not Available
  
Thermal Conductivity
173.00 W/m·K
  
7
Not Available
  
Critical Temperature
Not Available
  
Not Available
  
Molar Heat Capacity
24.27 J/mol·K
  
99+
Not Available
  
Thermal Expansion
4.50 µm/(m·K)
  
99+
Not Available
  
Standard Molar Entropy
32.60 J/mol.K
  
99+
Not Available
  
Enthalpy
  
  
Enthalpy of Vaporization
799.10 kJ/mol
  
1
Not Available
  
Enthalpy of Fusion
35.23 kJ/mol
  
1
Not Available
  
Enthalpy of Atomization
837.00 kJ/mol
  
1
Not Available