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- Cobalt - Wikipedia
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
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- Cobalt | Uses, Properties, Facts | Britannica
cobalt (Co), chemical element, ferromagnetic metal of Group 9 (VIIIb) of the periodic table, used especially for heat -resistant and magnetic alloys
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- Cobalt - Element information, properties and uses | Periodic Table
Element Cobalt (Co), Group 9, Atomic Number 27, d-block, Mass 58 933 Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images
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