27

Co

Cobalt
58.933195 (5)
 Historical Information

Minerals containing cobalt were of value to the early civilisations of Egypt and Mesopotamia for colouring glass deep blue. Cobalt was discovered by Georg Brandt at 1735 in Sweden. Origin of name: from the German word "kobald" meaning "goblin" or evil spirit.
Basic Information Shells
  • Name: Cobalt
  • Symbol: Co
  • Atomic number: 27
  • Atomic weight: 58.933195 (5)
  • Standard state: solid at 298 K
  • Group in periodic table: 9
  • Group name:none
  • Period in periodic table: 4
  • Block in periodic table: d-block
  • Classification: Metallic
 cobalt
Uses Trivia
  • used in magnet steels and stainless steels
  • used in alloys used in jet turbines and gas turbine generators
  • compounds are used as paint pigments

Cobalt is a brittle, hard, silver-grey transition metal with magnetic properties similar to those of iron (ferromagnetic). Cobalt is present in meteorites. Ore deposits are found in Zaire, Morocco and Canada.