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Cadmium, symbol, Cd, is a silvery
white metallic chemical element with a faint blue
tinge to it. It is the fifty-seventh most commonly
found element in the earth. It was discovered by
F. Stromeyer, in 1817, in Germany. Stromeyer
was studying a sample of zinc carbonate which
separated into a the new element ultimately called
cadmium. The only cadmium materials,
greenockite (cadmium sulfide) and otavile
(cadmium carbonate) are found in zinc oxide and
zinc carbonate. Cadmium, which is usually
associated with zinc has some differences; some of
which are that cadmium is softer and has a lower
melting and boiling point than zinc. There are five
basic states of cadmium. First, there is the regular
raw metal cadmium. Then there is cadmium oxide
which is formed by burning the raw metal in the air
producing brown smoke. Cadmium oxide can also
be formed by heating cadmium carbonate in acid
or ammonia producing a brown powder. By doing
this, cadmium and oxygen are being......

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Approximate Word Count: 409
Approximate Pages: 2 (250 words per double-spaced page)

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