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Question: Answered & Verified by Expert
The most stable ion is
ChemistryCoordination CompoundsJEE Main
Options:
  • A $\left[\mathrm{Fe}(\mathrm{OH})_3\right]^{3-}$
  • B $\left[\mathrm{Fe}(\mathrm{Cl})_6\right]^{3-}$
  • C $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$
  • D $\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$
Solution:
1034 Upvotes Verified Answer
The correct answer is: $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$
$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$
The oxidation state of the $\mathrm{CN}$ ion is +3 in $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$. There the $\mathrm{CN}$ ion is the most stable ion.

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