Essay On Cobalt

808 Words4 Pages
Trace element
“A chemical element whose concentration is very low and required only in small amounts by living organisms for normal growth or in a particular sample or environment.” Cobalt
Cobalt is trace element which is found on earth crust only in chemically combined form. The free element produced by smelting, is a hard lustrous, silver-gray colored metal.

Physical properties
• Color Metallic gray
• Density 8.90g/cm3
• Boiling point 3200K (1495C)
• melting point 1768K
• Heat capacity 24.81J/(mol-K)

In periodic table
Block d-block
Category transitional metal
Group 9
Period 4

Chemical properties
Cobalt is a hard ferromagnetic, silver-white,
…show more content…
Megallium , vitallium, ultimet) in magnets and magnetic recording media, as catalysts for the petroleum and chemical industries, as drying agents for paints and inks. Cobalt blue is important part of artists, stained glass, tiles and for making enamel jewelry. The radioactive isotopes, cobalt-60, is used in medical treatment and also to irradiate food, with aim to preserve the food and protect the consumer.
Cobalt in the environment
Cobalt is of relatively in low amount in the Earth's crust and in natural waters, from which it is precipitated as the highly insoluble cobalt sulfine CoS.
Although the average level of cobalt in soils is 10-30 ppm, there are soils with as little as 0.1 ppm and others with as much as 70 ppm of cobalt. In the marine environment cobalt is needed by algae and other nitrogen fixing organisms. it is not found as a free metal and is found in the form of ores. it is not mined alone, and it is produced as a by-product of nickel and copper mining activities. The most common ores of cobalt are cobaltite, erythrite, glaucodot, and skutterudite. The world's major producers and suppliers of cobalt are the Congo,China, Zambia, Russia and Australia.
World production is 17.000 tons per year.
Deficiency symptoms in

More about Essay On Cobalt

Open Document