Question

explain about cobalt metal ​

Answer 1

Answer:   Cobalt is a chemical element with the symbol Co and atomic number 27. Like nickel , cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.

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Answer 2

Explanation:

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Cobalt is a hard, gray metal that looks much like iron and nickel. It is ductile, but only moderately malleable. ... The magnetic properties of cobalt are even more obvious in alloys. An alloy is made by melting and mixing two or more metals.

Cobalt (symbol Co, number 27) is a chemical element occurring naturally only in a combined compound form. When isolated, it is a silver-gray, lustrous, hard metal. ... This metal is also known as goblin ore (German) because of the blue color it produced and because it gives off poisonous fumes upon smelting.

Cobalt has the chemical configuration [Ar]4s23d7 and has oxidation states Co(II) and Co(III).

Cobalt is a chemical element with the symbol Co and atomic number 27. Like nickel , cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.