![]() It is a ferromagnetic metal with a bluish and white hue, its Curie temperature is equal to 1388 degrees Kelvin. Cobalt is a chemical element of the periodic table, it is located in group 9, its symbol is Co and its atomic number is 27. Naturally occurring cobalt consists of its one stable isotope, 59Co. The electron configuration of Cobalt is 1s2 2s2 2p6 3s2 3p6 3d7 4s2. Isotopes: Cobalt has 22 isotopes whose half-lives are known, with mass numbers 50 to 72. Cobalt is generally produced as a by-product of nickel and copper mining. The main ores of cobalt are cobaltite (CoAsS), erythrite (hydrated arsenate of cobalt), glaucodot (Co,Fe)AsS, and skutterudite (Co,Ni)As 3. ![]() Source: Cobalt is not found as a free element in nature. These are used in guitar pickups and high speed motors.Ībundance earth’s crust: 25 parts per million by weight, 8 parts per million by molesĪbundance solar system: 4 parts per million by weight, 0.7 parts per million by moles This cobalt ion(Co 2+) has twenty-seven protons, thirty-two neutrons, and twenty-five electrons. Radioactive 60Co is used in the treatment of cancer.Ĭobalt is essential to many living creatures and is a component of vitamin B 12.Ĭobalt is also used in samarium-cobalt permanent magnets. In order to write the electron configuration we first need to know the number of electrons for the Cobalt (Co) atom. Here, the electron configuration of cobalt ion(Co 2+) is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 7. Cobalt stays magnetic to the highest temperature of all the magnetic elements (it has a Curie point of 1121 oC).Ĭobalt is used in alloys for aircraft engine parts and in alloys with corrosion/wear resistant uses.Ĭobalt is widely used in batteries and in electroplating.Ĭobalt salts are used to impart blue and green colors in glass and ceramics. The metal is active chemically, forming many compounds. Cobalt and its compounds are considered to be slightly toxic by skin contact and moderately toxic by ingestion.Ĭobalt is a bluish-white, lustrous, hard, brittle metal.
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