Nomenclature Worksheet - Answer Key

 

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  1. Method for naming a coordination compound

      2.  

    1. Cation is named before anion.

      2.  

    2. Within the complex ion, name ligand before metal ion.

      3.  

    3. Use prefixes to indicate the number of specific type of ligand attached.

      4.  

    4. If the ligand is an anion, change the ending to “-o”.

       

      If the ligand is neutral, use its name, as is.
       
    5. If more than one type of ligand, name them alphabetically.

      6.  

    6. Indicate oxidation number of metal ion using (roman numerals) after metal name. 

      7.  

    7. If complex ion is anion, change ending of metal name to :-ate”.

     

     

  2. Fill in these naming charts


    3.  

     

  3. Name the following

    1. [Co(NH3)6]Cl2

      hexaamminecobalt (II) chloride

    2. K2[PtCl4]

      potassium  tetrachloroplatinate (II)

    3. [Co(H2O)6]I3

      hexaaquacobalt (III) iodide

    4. [Co(NH3)3(NO2)3]

      triamminetrinitrocobalt (III)

      5.  

    5. Mn(NH2CH2CH2NH2)32+

      trisethylenediaminemanganese (II) ion

      6.  

    6. [Pt(NH3)4I2][PtI4]

      tetraamminediiodoplatinum (IV)  tetraiodoplatinate (II)

     

     

  4. Give the formulas for the following

      5.  

    1. Sodium dicyanobis(oxalato)ferrate (III)

      Na3[Fe (CN)2(C2O4)2]

      2.  

    2. Tetracarbonyldihydroxochromium(III) ion

      [Cr(CO)4(OH)2]+

      3.  

    3. Triamminechloro(ethylenediammine)chromium (III) iodide

      [Cr(NH3)3Cl(en)] I2

      4.  

    4. Amminetrichloroplatinate (II) ion

      [PtNH3(Cl)3]-

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