<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> 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>
is tungsten a metal or nonmetal or metalloid
is tungsten a metal or nonmetal or metalloid
rare metal
rare metal