Tungsten: Difference between revisions
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imported>Milton Beychok m (Replaced infobox,added content to infobox, edited the lede. Also re-worked some of the wiki links.) |
imported>Mark Widmer (Added comparison of density to that of lead.) |
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'''Tungsten''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] W. Its [[atomic number]] (the number of [[proton]]s) is 74. It has a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 183.5 g•mol<sup> −1</sup> and is a [[solid]] in its elemental form. | '''Tungsten''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] W. Its [[atomic number]] (the number of [[proton]]s) is 74. It has a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 183.5 g•mol<sup> −1</sup> and is a [[solid]] in its elemental form. | ||
Tungsten is considered a member of the "Transition metal" class of elements. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[boiling point]] of 5,555 °[[Celsius (unit)|C]] and a [[melting point]] of 3,422 °C. | Tungsten is considered a member of the "Transition metal" class of elements. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[boiling point]] of 5,555 °[[Celsius (unit)|C]] and a [[melting point]] of 3,422 °C. With a density of 19.3 g/cc, it is 1.7 times denser than lead. | ||
Because of its very high melting point, tungsten [[Light bulb|filaments]] were used for many years in [[Light bulb|incandescent light bulbs]]. | Because of its very high melting point, tungsten [[Light bulb|filaments]] were used for many years in [[Light bulb|incandescent light bulbs]]. | ||
Latest revision as of 19:06, 14 November 2020
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Tungsten is a chemical element, having the chemical symbol W. Its atomic number (the number of protons) is 74. It has a standard atomic weight of 183.5 g•mol −1 and is a solid in its elemental form.
Tungsten is considered a member of the "Transition metal" class of elements. At a pressure of 101.325 kPa, it has a boiling point of 5,555 °C and a melting point of 3,422 °C. With a density of 19.3 g/cc, it is 1.7 times denser than lead.
Because of its very high melting point, tungsten filaments were used for many years in incandescent light bulbs.