Cobalt My report is about the element Cobalt. Cobalt is the 27th element on the periodical table and has an atomic number of twenty-seven. It has a symbol of Co. CobaltΉs atomic weight is 58.9332. It has a melting point of 1,490š C. and a boiling point of 2,900š C. Cobalt looks almost exactly like iron and nickel. Cobalt is between iron and nickel on the periodical table and found in only . 001-.002 percent of the earthΉs crust. Cobalt was first found in the Harz Mountains. People in the silver mines dug up arsenic cobalt ores. Then, because they thought the ores contained copper, heated the ores releasing arsenic trioxides. Cobalt was named after the German kobold. A kobold was said to be an underground goblin or demon. In 1735 cobalt was identified. Cobalt is a white metal with a bluish cast. It is magnetic and very hard and does not tarnish. Cobalt has many u....

Number Of Pages: 2

Number Of Words: 352

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