Terbium
Discovered : by C.G. Mosander in 1843

Isolated in Stockholm, Sweden

Origin : The element is named after the Swedish town of Ytterby (see Erbium, Yttrium and Ytterbium).

Description :

A rare, silvery metal used in electronic devices.

Image :

Terbium is used in making CDs. Click here to see larger version of this image.