| Tecken | W |
| Atomnummer | 74 |
| Grupp | 6 (Kromgruppen) |
| Period | 6 |
| Block | d |
| Ämnesklass | Övergångsmetall |
| Utseende | Grayish white, lustrous |
| Färg | Grå |
| Antal protoner | 74 p+ |
| Antal neutroner | 110 n0 |
| Antal elektroner | 74 e- |
| Fas vid STP | Fast |
| Densitet | 19.25 g/cm3 |
| Relativ atommassa | 183.841 u |
| Smältpunkt | 3695 K 3421.85 °C 6191.33 °F |
| Kokpunkt | 6203 K 5929.85 °C 10705.73 °F |
| Ångbildningsvärme | 422.58 kJ/mol |
| Elektronegativitet (Paulingskalan) | 2.36 |
| Elektronaffinitet | 78.76 kJ/mol |
| Oxidationstal | −4, −2, −1, 0, +1, +2, +3, +4, +5, +6 (a mildly acidic oxide) |
| Jonisationspotential |
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| Upptäckt och första isolation | Juan José Elhuyar, Fausto Elhuyar (1783) |
| Namngivare | Torbern Bergman (1781) |
Upptäckten av volfram In 1781, Carl Wilhelm Scheele discovered that a new acid, tungstic acid, could be made from scheelite (at the time called tungsten). Scheele and Torbern Bergman suggested that it might be possible to obtain a new metal by reducing this acid. In 1783, José and Fausto Elhuyar found an acid made from wolframite that was identical to tungstic acid. Later that year, at the Royal Basque Society in the town of Bergara, Spain, the brothers succeeded in isolating tungsten by reduction of this acid with charcoal, and they are credited with the discovery of the element (they called it "wolfram" or "volfram"). | |