51*

Element of the day (day 51)
#48) Cd- Cadmium -] metal 
Beneficial to full health, or thought to be for plants.
Discovered in 1817 by Friedrich Stromeyer, Germany.
A soft, bluish-white metal. Soft enough to be cut with a knife. Used in low-melting alloys, especially solder. Is also used in electroplating, paint pigments, rechargeable batteries (ni-cads), in black and white television tubes and in the blue and green in color television tubes.

Cadmium minerals are rare but include cadmoselite (cadmium seleinide), greenockite (cadmium sulfide) and otavite (cadmium carbonate). Chiefly obtained as a by-product of zinc smelting.