What is CADMIUM?

In the transitional metal group of the periodic table of elements, Cd carries atomic number 48, and is a white-to-grey metal, melting at over 320 degrees C. A rare element within the earth's crust, occuring primarily in crystalline structure with zinc sulfide to to its affinity for sulfur. Zinc recovery leads to the commercial production of Cadmium, which can be used to protect against corosion or for neutron absorption in nuclear reactors. Cadmium films are photosensitive to ultraviolet light, with a 260nm peak frequency.

CADMIUM: "This tube has a cadmium lining, so radiation levels should be lowered."

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