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2025年1月6日 · Cobalt, metallic chemical element, one of the transition elements, atomic number 27. The metal is used especially for heat-resistant and magnetic alloys. A relatively large percentage of the world’s production goes into magnetic alloys …

Cobalt is transition metal and was discovered in pure form in 1735. It is essential part of vitamin B 12. Its compounds are known as cobalt blue used to color pottery and glass. History and Discovery. Cobalt has been used as a coloring agent since Bronze Age. It has been found in Egyptian statuettes and in Persian jewelry of the 3 rd millennium ...

Cobalt (Co) is a metal used in numerous diverse commercial, industrial, and military applications, many of which are strategic and critical. On a global basis, the leading use of cobalt is in rechargeable battery electrodes.

Element Cobalt (Co), Group 9, Atomic Number 27, d-block, Mass 58.933. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Jump to main content

Cobalt is a chemical element with symbol Co and atomic number 27. Classified as a transition metal, Cobalt is a solid at room temperature. J.C. Slater, J Chem Phys, 1964, 41 (10), 3199-3205. DOI:10.1063/1.1725697.

Cobalt (pronunciation: KO-bolt) is a hard, lustrous silvery-blue element belonging to the group of transition metals, and it is represented by the chemical symbol Co [1, 2, 3]. It is chemically active and can form many compounds [4].

2021年8月17日 · Cobalt has a melting point of 1495°C, boiling point of 2870°C, specific gravity of 8.9 (20°C), with a valence of 2 or 3. Cobalt is a hard, brittle metal. It is similar in appearance to iron and nickel. Cobalt has a magnetic permeability around 2/3 that of iron. Cobalt is found as a mixture of two allotropes over a wide temperature range.

Cobalt is a naturally occurring element found in rocks, soil, water, plants, and animals. Cobalt is used to produce alloys used in the manufacture of aircraft engines, magnets, grinding and cutting tools, artificial hip and knee joints.

Cobalt is a chemical element with the symbol Co and atomic number 27. It is a by-product of copper and nickel mining. The physico-chemical properties of cobalt allow for a hard wearing, wear-resistant metal with unique valency properties.