References

Bentor, Yinon. Chemical Element.com - Tantalum. Apr. 22, 2006

        <http://www.chemicalelements.com/elements/ta.html>

"Tantalum." Periodic Table. 15 Dec 2003. U.S. Department of Energy. 21 Apr. 2006

        <http://periodic.lanl.gov/elements/73.html>

"Tantalum." Wikipedia. 21 Apr. 2006. <http://en.wikipedia.org/wiki/Tantalum>.

"Nickel." 2004. Chemical Data. 20 Apr. 2006

        <http://www.chemsoc.org/viselements/Pages/tantalum.html>

Winter, Mark. "Tantalum." WebElements. University of Sheffield. 21 Apr. 2006

        <http://www.webelements.com/webelements/scholar/elements/tantalum/key.html>

Images taken from:

Starkey, Jennifer. Tantalum. 2005. 20 Apr. 2006

            <http://www.dakotamatrix.com/images/products/columbite5244b.jpg> 

Winter, Mark. Electronic Properties of Tantalum. 2006. 19 Apr. 2006

<http://www.webelements.com/webelements/scholar/elements/tantalum/electronic.html>

Winter, Mark. The Crystal Structure of Solid Tantalum. 2006. 19 Apr. 2006

        <http://www.webelements.com/webelements/scholar/elements/tantalum/structure.html>