The chemical symbol for tungsten is W and its atomic number is 74.
We find it listed in the periodic table in Group 6 and 6 period and block.
Tungsten belongs to the family of transition metals such as for example the Silver, the Bohrium, cadmium, ...
This element is stable.
the name tungsten came from the word tung sten which means heavy rock.
Atomic number (Z) 74
Group, block group 6, d-block
Period: period 6
Element category: transition metal
Standard atomic weight (±) (Ar) 183.84(1)
Electron configuration: [Xe] 4f14 5d4 6s2
per shell: 2, 8, 18, 32, 12, 2
Physical properties
Phase: solid
Melting point: 3695 K (3422 °C, 6192 °F)
Boiling point: 6203 K (5930 °C, 10,706 °F)
Density near r.t.: 19.25 g/cm3
when liquid, at m.p. 17.6 g/cm3
Critical point: 13,892 K, MPa
Heat of fusion: 35.3 kJ/mol
Heat of vaporization: 774 kJ/mol
Molar heat capacity : 24.27 J/(mol·K)
Atomic properties
Oxidation states: 6, 5, 4, 3, 2, 1, 0, −1, −2, −4 (a mildly acidic oxide)
Electronegativity: Pauling scale: 2.36
Ionization energies 1st: 770 kJ/mol
2nd: 1700 kJ/mol
Atomic radius empirical: 139 pm
Covalent radius: 162±7 pm
Crystal structure: body-centered cubic
Speed of sound thin rod 4620 m/s (at r.t.) (annealed)
Thermal expansion: 4.5 µm/(m·K) (at 25 °C)
Thermal conductivity: 173 W/(m·K)
Electrical resistivity: 52.8 nΩ·m (at 20 °C)
Magnetic ordering: paramagnetic
Young's modulus: 411 GPa
Shear modulus : 161 GPa
Bulk modulus: 310 GPa
Poisson ratio: 0.28
Mohs hardness: 7.5
Vickers hardness: 3430–4600 MPa
Brinell hardness: 2000–4000 MPa
CAS Number: 7440-33-7