Cobalt

Cobalt
Cobalt
Symbol Co
Atomic Number 27
Atomic Mass 58.933
Discovered by Cobalt was discovered by Georg Brandt

Chemical Properties Of Cobalt

Group 9 Melting point 1495°C, 2723°F, 1768 K
Period 4 Boiling point 2927°C, 5301°F, 3200 K
Block d Density (g cm−3) 8.86
Atomic number 27 Relative atomic mass 58.933  
State at 20°C Solid Key isotopes 59Co
Electron configuration [Ar] 3d74s2 CAS number 7440-48-4
ChemSpider ID 94547 ChemSpider is a free chemical structure database

What is Cobalt?

  • The element Cobalt belongs to the group VIII of the periodic table. It is similar to iron and nickel in its physical properties. Cobalt is found in plants and animals, air, water, soil, rocks. It may also enter into another environment through wind-blown dust or by rainwater washing down cobalt containing soil and rock.

Uses Of Cobalt

  • Cobalt is used in many alloys & super alloys to make parts in aircraft engines, gas turbine, high-speed steels, corrosion resistant alloys, cemented carbides.
  • It is used in magnets and magnetic recording media.
  • It is also used as catalysts for the petroleum and chemical industries.
  • Used as drying agents for paints and inks.
  • It is blue is majorly used by artists and is used by craft workers in porcelain, stained glass pottery, enamel jeweler, and tiles.
  • The radioactive isotopes, cobalt-60, is used in medical treatment and also to irradiate food. It is used in order to preserve the food and protect the consumer.

Properties Of Cobalt

  • It is a hard ferromagnetic, silver-white, lustrous, brittle element.
  • It is stable in air and does not react with water.
  • Like other metals, it can also be magnetized.
  • With dilute acids, it reacts slowly.
  • The metal melts at 1495 °C and boils at 2927 °C

Practise This Question

The natural petroleum contains: