What is Tantalum?
{{infobox tantalum}} [[File:Ta,73.jpg|thumb|Tantalum in a glass tube]] '''Tantalum''' is a [[chemical element]]. Tantalum was named '''tantalium'''. It has the chemical symbol '''Ta'''. It has the [[atomic number]] 73. It is a [[wikt:rare|rare]] [[metal]]. It is hard and blue-gray. In chemistry it is placed in a group of metal elements named the [[transition metal]]s. Tantalum does not easily [[corrosion|corrode]]. It is found in the [[mineral]] [[tantalite]]. ==Sources== {{Reflist}} {{Periodic Table}} {{chem-stub}} [[Category:Transition metals]]