In addition to being used as a dye, cobalt is also important to human nutrition as it is an essential part of vitamin B 12.Įstimated Crustal Abundance: 2. Some of these compounds are known as: cobalt blue, ceruleum, new blue, smalt, cobalt yellow and cobalt green. Cobalt-60 has a half-life of 5.27 years and decays into nickel-60 through beta decay.Ĭobalt compounds have been used for centuries to color porcelain, glass, pottery, tile and enamel. Cobalt is located between iron and nickel and shares many chemical and physical properties with these two elements. Cobalt is also used to make alloys for jet engines and gas turbines, magnetic steels and some types of stainless steels.Ĭobalt-60, a radioactive isotope of cobalt, is an important source of gamma rays and is used to treat some forms of cancer and as a medical tracer. Stellite alloys, which contain cobalt, chromium and tungsten, are used to make high-speed and high temperature cutting tools and dyes. Element Name: Cobalt: Symbol: Co: Atomic number: 27: Atomic weight (average) 58. Alnico, an alloy consisting of aluminum, nickel and cobalt is used to make powerful permanent magnets. Cobalt is usually recovered as a byproduct of mining and refining nickel, silver, lead, copper and iron.Īlthough cobalt is used in electroplating to give objects an attractive surface that resists oxidation, it is more widely used to form alloys. Cobalt's primary ores are cobaltite (CoAsS) and erythrite (Co 3(AsO 4) 2). Brandt was attempting to prove that the ability of certain minerals to color glass blue was due to an unknown element and not to bismuth, as was commonly believed at the time. Transition metal with various industrial uses, such as in magnets, batteries, and as a catalyst in chemical reactions. The size of the atoms nucleus as the number of protons and neutrons increases, so does the size of the atom. RF2NH2W5H Cobalt, Co, gray 3D isometric illustration of periodic table element with name, symbol, atomic number and weight. It is found naturally in rocks, soil, water, plants, and animals. Match each subshell with the maximum number of electrons it can contain at a given principal energy level: f. As with nickel, cobalt is found in the Earths crust only in a chemically combined. Cobalt is a metallic element with the atomic number 27. Cobalt is a chemical element with the symbol Co and atomic number 27. It occurs naturally as the mineral spherocobaltite and is used in pottery glazes. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. Like nickel, cobalt in the Earths crust is found only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. Cobalt was discovered by Georg Brandt, a Swedish chemist, in 1739. Modify: Description Cobalt (II) carbonate is a chemical compound of cobalt. Cobalt is a chemical element with symbol Co and atomic number 27.
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