74 · W
Tungsten
Acid prepared by Scheele in 1781, metal isolated by the Delhuyar brothers in 1783.
Identity
- Atomic number
- 74
- Symbol
- W
- Canonical name
- Tungsten
- Category
- transition metal
- Group
- 6
- Period
- 6
- Block
- d
- Other names
- wolfram
Properties
These quantities come from the Periodic Table JSON compilation. They have not yet been checked, one by one, against CIAAW atomic weights or NIST measurements. A value marked estimated is not a measurement.
- Atomic mass
- 183.841 u
- Electron configuration
- [Xe] 4f14 5d4 6s2
- Electrons per shell
- 2, 8, 18, 32, 12, 2
- Standard state
- solid
- Density
- 19.25 g/cm³
- Melting point
- 3,695 K
- Boiling point
- 6,203 K
- Electronegativity
- 2.36 Pauling
- First ionization energy
- 770 kJ/mol
- Electron affinity
- 78.76 kJ/mol
History
Tungstic acid
Observation · confirmed · 1781
Scheele prepares tungstic acid. He does not isolate the metal.
Metal isolated
Isolation · jointly credited · 1783
The Delhuyar brothers isolate tungsten.
Etymology
- Theme
- property
- Language
- suédois
- Root
- tung sten
- Meaning
- heavy stone; the symbol W comes from wolfram
Scientists
See also
Sources
- IUPAC, Periodic Table of the Elements
- Bowserinator, Periodic Table JSON. Compilation secondaire d’où viennent les grandeurs physiques importées (masse, densité, températures, énergies). Elles ne sont pas revérifiées une à une auprès du NIST ou de la CIAAW.
- John Emsley, Nature’s Building Blocks: An A–Z Guide to the Elements