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73 Ta Tantalum

Transition metal, mass: 180.95 u, 1 stable isotope (181), abundance rank (earth/space): 41/83

Click image to magnify. Tantalum pieces, 20 grams. Overall size in cm: 4
Tantalum Tantalum pieces
Tantalum is a hard, ductile heavy metal, which chemically is very similar to niobium. Like this, it easily forms a protective oxide layer, which makes it very corrosion-resistant. Its color is steel grey with a little touch of blue and purple. Most tantalum is used for small capacitors with high capacity, like those in cellphones. Because it is nontoxic and well compatible with the body, it is used in medicine for prostheses and instruments. Tantalum is the rarest stable element in the universe, however, Earth has large deposits. Tantalum carbide (TaC) and tantalum hafnium carbide (Ta4HfC5) are very hard and mechanically enduring.

Piece of tantalum Piece of tantalum
Single pieces of tantalum, each about 1 cm in size.

Large chunk of tantalum
Large chunk of tantalum, 127 grams, 3 x 5 cm.


Creative Commons License The images are licensed under a Creative Commons Attribution 3.0 Unported License, unless otherwise noted. Attribution by linking to the according element page.


Page last changed on March 27. 2010

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