Element Properties: 23-29 atomic number

by Izzy X. Product specialist

VANADIUM, CHROMIUM, MANGANESE, IRONCOBALTNICKEL, COPPER

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Vanadium is a light gray or white lustrous powder, it does not tarnish in air and not affected by moisture at ordinary temperatures. It is quite rare.
Chromium is a bluish white, brittle metal that is both hard and corrosion resistant. It is a very important steel alloy metal, and its chief ore is chromite.
Manganese is one of the most widely distributed, abundant elements. It is a gray-white, hard, brittle metal which is essential to the process of steel making.
Iron is a soft, ductile, malleable silver metal. It is somewhat magnetic, only holding its magnetism after hardening.
Cobalt is a gray, hard, magnetic, ductile, somewhat malleable metal that exists in two allotropic forms. Both forms can exist at room temperature

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Nickel is a white ferromagnetic metal that resists tarnish. Its one of the most important steel alloys. When divided into tiny pieces, it becomes an excellent catalyst, especially in the hydrogenation of fats and oils. Nickel dioxide was used as the cathode in Edisons storage battery. Nickel compounds have become important in electroplating and various other things.

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The sources and uses of cobalt

Cobalt’s discovery was in 1735, Swedish chemist obtained when calcining. Cobalt metal is silvery white, the density is 8.9g/cm3, the melting point is 1495℃, the boiling point is 2870℃, valence is ...