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5. Co-ordination chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry5. Co-ordination chemistry1 Mark
MCQ
The $[Fe(CN)_6 ]^{3-}$ complex ion
  • A
    exhibits planar geometry
  • B
    is diamagnetic
  • ✓
    should be very stable
  • D
    has $2$ unpaired electrons
✓

Answer

Correct option: C.
should be very stable
c
Both the high charge density of $Fe^{3+}$ in $[Fe(CN)_6]^{3-}$ and strong basic (Lewis) character of the ligand $CN^-$ attribute to the stability of the complex.

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