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Tantalum - Tungsten - Rhenium
Mo

W
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General
Name, Symbol, Number Tungsten, W, 74
Chemical series Transition metals
Group, Period, Block 6 (VIB), 6 , dThe d-block of the periodic table of elements consists of those periodic table groups that contain elements in which, in the atomic ground state, the highest-energy electron is in a d- orbital. The d-block elements are often also known as transition metal
DensityFor other meanings of density, see density (disambiguation Density (symbol: rho Greek: rho) is a measure of mass per unit of volume. The higher an object's density, the higher its mass per volume. The average density of an object equals its total mass div, Hardness 19250 kg/m3Kilogram per cubic metre is the SI measure of density and is represented as kg/m³, where kg stands for kilogram and m³ stands for cubic metre. The density of water is about 1000 kg/m³, since a cubic metre of water weighs about a tonne. kg/m³" is sometimes, 7.5
AppearanceFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of grayish white, lustrous
Atomic properties
Atomic weightIn reference to a certain isotope of a chemical element, atomic weight (more accurately relative atomic mass though also called simply atomic mass is the mass of one atom of the isotope expressed in units atomic mass unit amu) such that the Carbon-12 isot 183.84 amuThe atomic mass unit amu , unified atomic mass unit u , or dalton Da , is a small unit of mass used to express atomic masses and molecular masses. It is defined to be 1/12 of the mass of one atom of Carbon-12. Accordingly, :1 u 1/N gram 1/(1000 N) kg (whe
Atomic radiusAtomic radius is the distance from the atomic nucleus to the outmost stable electron orbital in a atom that is at equilibrium and is measured in picometers or Angstroms. Atomic radii are called covalent radii (a reference to the types of bonds formed) whe(calc.) 135 (193) pm
Covalent radius 146 pm
van der Waals radius no data
Electron configuration [ Xe]4 f14 5d4 6 s2
e- 's per energy level 2, 8, 18, 32, 12, 2
Oxidation states ( Oxide) 6, 5, 4, 3, 2 (mildly acidic)
Crystal structure Cubic body centered
Physical properties
State of matter solid
Melting point 3695 K (6192 ° F)
Boiling point 5828 K (10031 °F)
Molar volume 9.47 ×10-6 m3/mol
Heat of vaporization 824 kJ/mol
Heat of fusion 35.4 kJ/mol
Vapor pressure 4.27 Pa at 3680 K
Speed of sound 5174 m/s at 293.15 K
Miscellaneous
Electronegativity 2.36 ( Pauling scale)
Specific heat capacity 130 J/(kg*K)
Electrical conductivity 18.9 106/m ohm
Thermal conductivity 174 W/(m*K)
1st ionization potential 770 kJ/mol
2nd ionization potential 1700 kJ/mol
Most stable isotopes
iso NA half-life DM DE M eV DP
180W 0.12% 7.4 E16 y α no data no data
182W 26.50% 8.3 E18 y α no data no data
183W 14.3% 1.1 E17 y iso no data no data
184W 30.64% 4 E18 y α no data 180Hf
186W 28.43% 6.5 E18 y α no data no data
SI units & STP are used except where noted.
This article is about the chemical element. "Tungsten" may also refer to the Tungsten Handheld PDA.

Tungsten (formerly Wolfram) is a chemical element in the periodic table that has the symbol W ( L. Wolframium) and atomic number 74. A very hard, heavy, steel-gray to white transition metal, tungsten is found in several ores including wolframite and scheelite and is remarkable for its robust physical properties. The pure form is used mainly in electrical applications but its many compounds and alloys are widely used in many applications (most notably in light bulb filaments and in space-age superalloys).





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