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jancancook



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Date d'inscription : 15/02/2011

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MessageSujet: Tantalum    Tantalum                             Icon_minitimeMer 23 Fév - 15:30

Tantalum (play /ˈtæntələm/ TAN-təl-əm; previously known as tantalium) is a chemical element with the symbol Ta and atomic number 73. A rare, hard, blue-gray, lustrous transition metal, tantalum is highly corrosion resistant and occurs naturally in the mineral tantalite, always together with the chemically similar niobium. It is part of the refractory metals group, which are widely used as minor component in alloys. The chemical inertness of tantalum makes it a valuable substance for laboratory equipment and a substitute for platinum, but its main use today is in tantalum capacitors in electronic equipment.

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