Cobalt is a chemical element; it has symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a 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, somewhat brittle, gray metal.

Jan 6, 2025 · 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 ...

Apr 23, 2023 · Cobalt (Co) is a chemical element with the atomic number 27 and an atomic mass of 58.93 g/mol. It is a hard, brittle, and silver-gray metal that belongs to the transition metals group in the periodic table. Cobalt has a high melting point, excellent magnetic properties, and is known for its blue color when used as a pigment in glass and ceramics.

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].

Feb 5, 2015 · Properties, sources and uses of the element cobalt. Some common forms of cobalt include cobalt-60 and cobalt chloride. Cobalt blue is a vivid color used in artwork.

Named from the German word meaning “goblin,” cobalt is a shiny, brittle, bluish-gray metal. It is a hard, stable metal unaffected by air or water and only slowly affected by acid. Cobalt is one of the three ferromagnetic metals, so it is often used in alloys for magnets.

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.

Nov 14, 2018 · Cobalt is atomic number 27 on the periodic table and element symbol Co. This hard, blue-gray transition metal is used in alloys and imparts a blue color to glass. Here are cobalt facts, including its properties, uses, and health effects. Cobalt is atomic number 27 with element symbol Co on the periodic table.

- Cobalt is a hard, metallic element symbolized as Co with an atomic number of 27. - This transition metal is crucial for various applications, such as rechargeable batteries, superalloys, and pigments. - As a metal, it is solid at room temperature, silvery-blue in …