Tungsten Properties

Tungsten

Physical

Melting Point

3,410.00 °C 1

Boiling Point

5,660.00 °C 1

Hardness

Mohs Hardness

7.50 2

Brinell Hardness

2,000.00 MPa 4

Vickers Hardness

3,430.00 MPa 1

Optical Properties

Refractive Index

Not Available 0

Reflectivity

62.00 % 13

Speed of Sound

4,620.00 m/s 16

Allotropes

No 0

α Allotropes

Not Available 0

β Allotropes

Not Available 0

γ Allotropes

Not Available 0

Chemical

Chemical Formula

W 0

Isotopes

Known Isotopes

33 6

Electronegativity

Pauling Electronegativity

2.36 2

Sanderson Electronegativity

0.98 23

Allred Rochow Electronegativity

1.40 19

Mulliken-Jaffe Electronegativity

Not Available 0

Allen Electronegativity

1.47 29

Electropositivity

Pauling Electropositivity

1.64 52

Ionization Energies

1st Energy Level

770.00 kJ/mol 16

2nd Energy Level

1,700.00 kJ/mol 29

3rd Energy Level

Not Available 0

Electrochemical Equivalent

1.14 g/amp-hr 54

Electron Work Function

4.55 eV 13

Other Chemical Properties

Ionization, Radioactive Isotopes, Solubility 0

Mechanical

Density

Density At Room Temperature

19.25 g/cm³ 16

Density When Liquid (at m.p.)

17.60 g/cm3 5

Vapor Pressure

Vapor Pressure at 1000 K

Not Available 0

Vapor Pressure at 2000 K

0.00 (Pa) 32

Tensile Strength

370.00 MPa 10

Viscosity

Not Available 0

Elasticity properties

Shear Modulus

161.00 GPa 5

Bulk Modulus

310.00 GPa 4

Young's Modulus

411.00 GPa 4

Poisson Ratio

0.28 17

Other Mechanical Properties

Ductile, Malleable 0

Periodic Table

Symbol

W 0

Group Number

6 12

Period Number

6 2

Block

d block 0

Element Family

Transition Metal 0

Atomic

Atomic Number

74 42

Atomic Weight

183.84 amu 37

Atomic Volume

9.53 cm3/mol 50

Electron Configuration

[Xe] 4f¹⁴ 5d⁴ 6s² 0

Valence Electron Potential

140.00 (-eV) 5

Atom

Number of Protons

74 41

Number of Neutrons

110 27

Number of Electrons

74 41

Crystal Structure

Body Centered Cubic (BCC) 0

Crystal Lattice

BCC-Crystal-Structure-.jpg#100 0

Radius of an Atom

Atomic Radius

139.00 pm 39

Covalent Radius

162.00 pm 29

Van der Waals Radius

200.00 pm 28

Lattice Constant

316.52 pm 56

Lattice Angles

π/2, π/2, π/2 0

Lattice C/A Ratio

Not Available 0

Adjacent Atomic Numbers

Next Element

64 0

Previous Element

57 0

Magnetic

Electrical Properties

Resistivity

52.80 nΩ·m 42

Electrical Conductivity

0.19 10⁶/cm Ω 10

Electron Affinity

78.60 kJ/mol 13

Electrical Property

Superconductor 0

Magnetic Characteristics

Specific Gravity

19.22 9

Magnetic Ordering

Paramagnetic 0

Permeability

Not Available 0

Susceptibility

Not Available 0

Thermal

Specific Heat

0.13 J/(kg K) 39

Thermal Conductivity

173.00 W/m·K 7

Critical Temperature

Not Available 0

Molar Heat Capacity

24.27 J/mol·K 52

Thermal Expansion

4.50 µm/(m·K) 59

Standard Molar Entropy

32.60 J/mol.K 47

Enthalpy

Enthalpy of Vaporization

799.10 kJ/mol 1

Enthalpy of Fusion

35.23 kJ/mol 1

Enthalpy of Atomization

837.00 kJ/mol 1

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Tungsten Properties

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