Commodity Code
zinc
http://resource.geosciml.org/classifier/cgi/commodity-code/zinc
| definition | Zinc is a metallic chemical element; it has the symbol Zn and atomic number 30. It is the first element of group 12 of the periodic table. In some respects zinc is chemically similar to magnesium: its ion is of similar size and its only common oxidation state is +2. Zinc is the 24th most abundant element in the Earth's crust and has five stable isotopes. |  |
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| source | http://en.wikipedia.org/wiki/Zinc | |
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| is primary topic of | zinc | |||||