CADMIUM

The cadmium is a chemical element of atomic placed number 48 in the group 12 of the periodic table of the elements. His symbol is A CD. It is a heavy metal, bluish, slightly abundant white.
It is one of the most toxic metals, though it might be a chemical essential, necessary element in very small quantities, but this is not clear
The cadmium is a white bluish, ductile and malleable metal. It is possible to cut easily with a knife.
The cadmium (in Latin, cadmia, and in Greek kadmeia, that means "calamine", the name that was receiving former the carbonate of zinc) was discovered in Germany in 1817 by Friedrich Stromeyer, who observed that some samples of calamine with impurities were changing color when they were warming up, whereas the pure calamine was not doing it; he found the new element as impurity in this compound of zinc. For some hundred years Germany was the principal producer of this metal.
Information obtained of www.wikipedia.org