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- Cobalt - Wikipedia
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
- 钴 - 维基百科，自由的百科全书
鈷 （ ɡǔ ） （英語： Cobalt ），是一種化學元素，化學符號为Co，原子序數为27，原子量為 58 933 195 u 。 鈷和鎳一樣，在 地殼 中只能有化合物形式，以少量沉澱於 隕鐵 （Meteoric iron）的方式儲存。
- Cobalt | Uses, Properties, Facts | Britannica
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 such as the Alnicos for permanent magnets
- Cobalt | History, Uses, Facts, Physical Chemical Characteristics
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
- WebElements Periodic Table » Cobalt » the essentials
Cobalt is a brittle, hard, silver-grey transition metal with magnetic properties similar to those of iron (ferromagnetic) Cobalt is present in meteorites Ore deposits are found in Zaire, Morocco and Canada
- Cobalt Chemistry | Cobalt Institute
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
- Cobalt Definition, Facts, Symbol, Discovery, Property, Uses
What is cobalt (element 27), is it a metal, nonmetal, or metalloid, how many valence electrons does it have, its molar mass, electronic configuration, health effects Chemistry Learner It's all about Chemistry
- Cobalt - New World Encyclopedia
Cobalt (chemical symbol Co, atomic number 27) is a hard, lustrous, silver-gray metal It is found in various ores and is important as a trace element in the human body It is used in the preparation of wear-resistant, high-strength alloys , magnetic media, and battery electrodes
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