Q67 / 225 · JEE Main 2002 · Chemistry

The most stable ion is

  • A
    $\left[\mathrm{Fe}(\mathrm{OH})_3\right]^{3-}$
  • Correct answer
    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

A more basic ligand forms stable bond with metal ion, $\mathrm{Cl}^{-}$ is most basic amongst all

Hence, the correct answer is option: 'B'.

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