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Coordination Compounds — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds1 Mark
MCQ
Amongst the following, the most stable complex is:
    • A
      [Fe(H2O)6]3+
    • B
      [Fe(NH3)6]3+
    • C
      [Fe(C2O4)3]3–
    • D
      [FeCl6]3–
    ✓

    Answer

    1. [Fe(C2O4)3]3–

    In each of the given complex, Fe is in +3 oxidation state. As C2O42-  is didentate chelating ligand, it forms chelate rings and hence (c) out of complexes given above is the most stable complex.

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