![]() The transformation is sluggish and accounts in part for the wide variation in reported data on physical properties of cobalt. Cobalt tends to exist as a mixture of two allotropes over a wide temperature range. It has a metallic permeability of about two thirds that of iron. Properties Electrons Isotopes Compounds Wide Dont like ads No problem. Cobalt is a brittle, hard metal, resembling iron and nickel in appearance. ![]() Visualize trends, 3D orbitals, isotopes, and mix compounds. 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. Interactive periodic table showing names, electrons, and oxidation states. Some of these compounds are known as: cobalt blue, ceruleum, new blue, smalt, cobalt yellow and cobalt green. Cobalt is the 27th element on the elemental periodic table belonging to. Select from 87 premium Cobalt Periodic Table of the highest quality. 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. They all have unique properties and functions essential for ecosystems and humans. Find Cobalt Periodic Table stock photos and editorial news pictures from Getty Images. 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. 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. Fact boxGroup91495C, 2723F, 1768 KAtomic number2758. For elements with no stable isotopes, the. ![]() Cobalt was discovered by Georg Brandt, a Swedish chemist, in 1739. Interactive periodic table showing names, electrons, and oxidation states.
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