
Tungsten or Wolfram (W) is a chemical element of the periodic table, located in the group 6 and the period 6, and is having the atomic number 74. It is a hard, lustrous, greyish-white transition metal, whose name comes from the Swedish word “tung sten”, which means heavy stone. It has the highest melting point and boiling point of all metals.
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– d block |
FAQs on Tungsten Element
Tungsten |
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‣ What does tungsten look like? Appearance: grayish white, lustrous |
‣ What year was tungsten discovered and by whom? Discovery and first isolation: Juan Jose Elhuyar and Fausto Elhuyar (1783) Named by: Torbern Bergman (1781) |
‣ Where is tungsten found on the periodic table?![]() Location: Tungsten is found in the sixth column of the periodic table, next to the tantalum element. |
‣ What is the atomic number of tungsten (w)? Atomic number (Z): 74 |
‣ What is the symbol for tungsten? Symbol: W |
‣ What is the atomic weight of tungsten? Standard atomic weight: 183.84 |
‣ What block does tungsten belong to? Block: d-block |
‣ What group is tungsten in on the periodic table? Group: 6 |
‣ What period is tungsten in the periodic table? Period: 6 |
‣ What is the atomic radius of tungsten? Atomic radius: empirical: 139 pm |
‣ Tungsten covalent radius: 162±7 pm |
‣ What is tungsten melting point? Melting point: 3695 K (3422 °C, 6192 °F) |
‣ What is tungsten boiling point? Boiling point: 6203 K (5930 °C, 10706 °F) |
‣ How many electron shells does tungsten have? Electrons per shell: 2, 8, 18, 32, 12, 2 |
‣ What is the electron configuration for tungsten? Electron configuration: [Xe] 4f14 5d4 6s2 |
‣ Tungsten ionization energies: 1st: 770 kJ/mol 2nd: 1700 kJ/mol |
‣ What is the phase of tungsten? Phase (at r.t): solid |
‣ What is tungsten density? Density (near r.t): 19.3 g/cm3 when liquid (at m.p): 17.6 g/cm3 |
‣ Tungsten magnetic ordering: paramagnetic |
‣ Tungsten natural occurrence: primordial |
‣ Tungsten oxidation state: +2, +3, +4, +5, +6 |
‣ What’s the electronegativity of tungsten? Electronegativity: Pauling scale: 2.36 |
‣ Tungsten poisson’s ratio: 0.28 |
‣ Tungsten heat of fusion: 52.31 kJ/mol |
‣ Tungsten heat of vaporization: 774 kJ/mol |
‣ Tungsten molar heat capacity: 24.27 J/(mol K) |
‣ Tungsten molar magnetic susceptibility: +59.0 × 10-6 cm3/mol (298 K) |
‣ Speed of sound in tungsten: 4620 m/s (at r.t) (annealed) |
‣ What is the crystal structure of tungsten? Crystal structure: body-centered cubic (bcc) |
‣ Thermal expansion of tungsten: 4.5 µm/(m.K) (at 25 °C) |
‣ Thermal conductivity of tungsten: 173 W/(m.K) |
‣ Tungsten electrical resistivity: 52.8 nΩ.m (at 20 °C) |
‣ What is the hardness of tungsten? Mohs hardness: 7.5 Vickers hardness: 3430-4600 MPa Brinell hardness: 2000-4000 MPa |
‣ Young’s modulus of tungsten: 411 GPa |
‣ Shear modulus of tungsten: 161 GPa |
‣ Bulk modulus of tungsten: 310 GPa |
‣ Tungsten CAS number: 7440-33-7 |
‣ Tungsten vapor pressure
Vapor pressure | ||||||
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P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
at T (K) | 3477 | 3773 | 4137 | 4579 | 5127 | 5823 |
‣ How many isotopes does tungsten have?
Main isotopes of tungsten | ||||
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Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
180W | 0.12 % | 1.8 × 1018 y | α | 176Hf |
181W | syn | 121.2 d | ε | 181Ta |
182W | 26.50 % | stable | ||
183W | 14.31 % | stable | ||
184W | 30.64 % | stable | ||
185W | syn | 75.1 d | β– | 185Re |
186W | 28.43 % | stable |
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