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Sort each complex by its geometry

Exercise and reference answers

Items
  1. Item
    [Co(NH₃)₆]³⁺
    Category
    Octahedral
  2. Item
    [PtCl₆]²⁻
    Category
    Octahedral
  3. Item
    [Ni(CO)₄]
    Category
    Tetrahedral
  4. Item
    [PtCl₄]²⁻
    Category
    Square planar
Categories
  1. Item
    Octahedral
  2. Item
    Tetrahedral
  3. Item
    Square planar

Explanation

Coordination number 6 gives octahedral 4 can give either tetrahedral or square planar. Source: syllabus Chemistry Part I, Ch 5 Coordination Compounds.
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