<Tr> <Td_colspan="2"> <Ul> <Li> view </Li> <Li> talk </Li> <Li> </Li> </Ul> references in Wikidata </Td> </Tr> <Ul> <Li> view </Li> <Li> talk </Li> <Li> </Li> </Ul> <P> Tungsten, or wolfram, is a chemical element with symbol W and atomic number 74 . The name tungsten comes from the former Swedish name for the tungstate mineral scheelite, from tung sten "heavy stone". Tungsten is a rare metal found naturally on Earth almost exclusively in chemical compounds . It was identified as a new element in 1781, and first isolated as a metal in 1783 . Its important ores include wolframite and scheelite . </P> <P> The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all the elements discovered, melting at 3422 ° C (6192 ° F, 3695 K). It also has the second highest boiling point, at 5930 ° C (10706 ° F, 6203 K). Its density is 19.3 times that of water, comparable to that of uranium and gold, and much higher (about 1.7 times) than that of lead . Polycrystalline tungsten is an intrinsically brittle and hard material (under standard conditions, when uncombined), making it difficult to work . However, pure single - crystalline tungsten is more ductile, and can be cut with a hard - steel hacksaw . </P>

Is tungsten a metal or nonmetal or metalloid