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    • Elemental cobalt symbol, plate etc. graphic
    Rights: The University of Waikato Te Whare Wānanga o Waikato Published 27 September 2019 Size: 110 KB Referencing Hub media

    On the periodic table1 of elements2, cobalt is represented by the symbol Co. Cobalt has been used as a pigment3 for ceramic4, pottery and glass wares for many centuries.

    Willow pattern plate decorated with cobalt blue, (ca. 1727–1760), Auckland Museum, CC BY 4.0.

    1. periodic table: The organisation of all known elements into groups with similar properties.
    2. element: A substance made of atoms that all have the same atomic number. Elements cannot be split into simpler substances using normal chemical methods.
    3. pigment: Any fine, insoluble, dry, solid particles used to give colour. In biology, the dye-like material produced generally in the superficial parts of animals that gives colour to skin, eyes and hair.
    4. ceramic: An inorganic non-metal material that can be shaped and hardened by firing at high temperature to form a hard, strong and endurable body.

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    Cobalt

    Cobalt is a chemical element – a substance that contains only one type of atom. Its official chemical symbol is Co and its atomic number is 27, which means that a cobalt atom has 27 protons in ...

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      periodic table

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      2. The organisation of all known elements into groups with similar properties.

      ceramic

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      3. An inorganic non-metal material that can be shaped and hardened by firing at high temperature to form a hard, strong and endurable body.

      element

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      4. A substance made of atoms that all have the same atomic number. Elements cannot be split into simpler substances using normal chemical methods.

      pigment

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      5. Any fine, insoluble, dry, solid particles used to give colour. In biology, the dye-like material produced generally in the superficial parts of animals that gives colour to skin, eyes and hair.

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