INORGANIC CHEMISTRY
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

                  
  • HOME
  • ABOUT
  • CATEGORIES
  • SITE MAP
  • COPYRIGHT
  • ADVERTISE
  • CONTACT
    •

    entire Web this site



    cobalt (Co)

    cobalt
    Cobalt. Credit: RTC, Wikipedia
    A hard, brittle, silvery-white metallic element in group VIII of the periodic table; it is ferromagnetic (see ferromagnetism) and a transition element. Cobalt is found associated with nickel, silver, lead, copper, and iron ores, and resembles nickel and iron chemically and in appearance.

    An alloy of cobalt, aluminum, nickel, and iron ("Alnico") It is used for making magnets; other cobalt alloys, being very hard, are used for cutting tools. Cobalt is used as the matrix for tungsten carbide in drill bits. Its colored salts are used in blue glass and the artists' pigment cobalt blue. Cobalt catalysts facilitate hydrogenation and other industrial processes. The radioisotope cobalt-60 is used in radiation therapy.

    Cobalt's characteristic oxidation states are +2 and +3.


    atomic number 27
    relative atomic mass 58.933
    electronic configuration 1s22s22p63s23p64s23d7
    main oxidation states +2, +3
    relative density 8.9
    melting point 1,495°C (2,723°F)
    boiling point 3,100°C (5,612°F)


    Related category

       • INORGANIC CHEMISTRY





    Also on this site:

    Encyclopedia of Alternative Energy & Sustainable Living
    Encyclopedia of History
    Transport Concepts & Designs (partner site)


    BACK TO TOP