Cobalt

By. Angela Figueroa Per.8

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Discovery

Discovered in 1739 by Georg Brandt. The origin of the name is derived from the German word 'Kobald', meaning goblin.

How element is used

Colbat is used to make powerful permanent magnets. Stellite alloys, which contail colbalt,chromium and tungsten, are used to make high-speed and high temperature cutting tools and dyes.

Physical properties

Cobalt is brittle, hard, silver-grey transition metal with magnetic properties similar to those of iron. It has a high mealting pint and is hard-wearing even at high tempratures. Its alloys also possesses useful properties and so it finds use in high speed and cutting steel tools for instance.

Chemical properties

Cobalt is a hard ferromagnetic, silver-white, hard, lustrous, brittle element. It is a member of group VIII of the periodic table. Like iron, it can be magnetized. It is similar to iron and nickel in its physical properties. The element is active chemically, forming many compounds. Cobalt is stable in air and unaffected by water, but is slowly attacked by dilute acid

Periodic Table Information

Where is it found in nature?

  1. Cobalt is found in the minerals cobaltite, skutterudite and erythrite. Important ore deposits are found in DR Congo, Canada, Australia,Zambia and Brazil. Most cobalt is formed as a by-product of nickel refining.