Tungsten

74
W

183.85

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Tungsten is use in lamp filament.

Properties

Symbol Name Atomic Number Atomic Weight Group Number
W Tungsten 74 183.85 6

Description

Standard State: solid at 298 K
Color: Grayish white lustrous

In 1779 Peter Woulfe examined the mineral now known as wolframite and concluded it must contain a new substance.  Scheele, in 1781, found that a new acid could be made from tungsten.  Scheele and Berman suggested the possibility of obtaining a new metal by reducing this acid.

Tungsten has the highest melting point and lowest vapor pressure of all metals, and at temperatures over 1650C has the highest tensile strength. 

Tungsten and its alloys are used extensively for filaments for electric lamp, electron and television tubes, and for metal evaporation work; for electrical contact points for automobiles distributors.