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What is the atomic weight of cobalt?

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Quick Answer

The element cobalt has an atomic number of 27 and atomic weight of 58.933195. The density of the element cobalt is 8.86 grams per cubic centimeter.

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Cobalt is classified as a metal. Cobalt is solid at room temperature, melts at 2723 degrees Fahrenheit and boils at 5301 degrees Fahrenheit. Cobalt was discovered in 1739 by a Swedish chemist named Georg Brandt, who was experimenting with minerals to color glass blue. Cobalt is sometimes used to create alloys and permanent magnets. Cobalt is found by mining and refining metals such as iron, copper, lead and nickel. A radioactive isotope of cobalt called cobalt-60 is commonly used to treat cancer.

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