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Cadmium
| My Nucleus Atomic Number : 48 Atomic Mass : 112.411 g Protons : 48 Electrons: 48 Neutrons: 64 | My Electrons Shell Structure: 2.8.18.18.2  | My Properties Color : silvery grey metallic Classification : Metallic State : Solid Density : 8.642 g / cm3 Melting point : 321.07 celsius Boiling point : 767 degrees celsius |
| My Home (Body, Planet, Universe) Cadmium might be a necessary element in very, very, small quantities in rats. Inhalation of cadmium dust causes problems for the respiratory tract and for the kidneys. Death may follow. Ingestion of any significant amount of cadmium causes immediate poisoning and damage to the liver and the kidneys. Cadmium compounds are encountered relatively rarely by most people. All cadmium compounds should be regarded as highly toxic. It is a cumulative poison and causes renal failure. | I am Cadmium!  | My Compounds (My Friends!) In compounds of cadmium (where known), the most common oxidation numbers of cadmium are: 2.   |
| My Story Cadmium was discovered in Germany in1817 by Friedrich Strohmeyer. Strohmeyer found the new element within an impurity in zinc carbonate (calamine) and for 100 years Germany remained the only important producer of the metal. The metal was named after the Latin word for calamine since the metal was found in this zinc compound. Strohmeyer noted that some impure samples of calamine changed color when heated but pure calamine did not.Even though cadmium and its compounds are highly toxic, the British Pharmaceutical Codex from 1907 states that cadmium iodide was used as a medicine to treat : enlarged joints, scrofulous glands, and chilblains. | My Jobs Cadmium is used to a small extent as coatings (often achieved by electroplating) to protect metals such as iron. Its use is restricted because of environmental concerns. The metal is a component of some specialist alloys including solders and alloys with low coefficients of friction and good fatigue resistance. Cadmium is a component of Ni-Cd batteries. Cadmium is used in some control rods and shields within nuclear reactors. Cadmium is used in black and white television phosphors and in blue and green phosphors for colour TV tubes. Some semiconductors contain cadmium. The sulphide (CdS) is used as a yellow pigment. Some compounds are used as stabilizers for PVC. | |
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Latest page update: made by amanda_lau
, Oct 21 2006, 5:10 PM EDT
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