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单词 coordination number
释义
coordination number
Physics

  • The number of groups, molecules, atoms, or ions surrounding a given atom or ion in a complex or crystal. For instance, in a square-planar complex the central ion has a coordination number of four. In a close-packed crystal (see close packing) the coordination number is twelve.

Chemistry

  • The number of groups, molecules, atoms, or ions surrounding a given atom or ion in a complex or crystal. For instance, in a square-planar complex the central ion has a coordination number of four. In a close-packed crystal (see close packing) the coordination number is twelve.

Geology and Earth Sciences

  • Number of atoms, ions, molecules, or groups of these that surround a given atom in a complex molecule. In geology the most common groups are oxygen atoms surrounding a cation, e.g. in silicate minerals (see silicates) silicon is always surrounded by four oxygen atoms.
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