The number of paramagnetic complex among $\left[\mathrm{FeF}_6\right]^{3-}…

The number of paramagnetic complex among $\left[\mathrm{FeF}_6\right]^{3-},\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$, $\left[\mathrm{MnCl}_6\right]^{3-}$ and $\left[\mathrm{CoF}_6\right]^{3-}$, which involved $\mathrm{d}^2 \mathrm{sp}^3$ hybridization is ____.

Solution

\(\begin{array}{l|l} \left[\mathrm{FeF}_6\right]^{3-} & \text{Paramagnetic} & \mathrm{sp}^3 \mathrm{~d}^2 \\ \left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-} & \text{Paramagnetic} & \mathrm{d}^2 \mathrm{sp}^3 \\ \left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-} & \text{Paramagnetic} & \mathrm{d}^2 \mathrm{sp}^3 \\ \left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-} & \text{Diamagnetic} & \mathrm{d}^2 \mathrm{sp}^3 \\ \left[\mathrm{MnCl}_6\right]^{3-} & \text{Paramagnetic} & \mathrm{sp}^3 \mathrm{~d}^2 \\ \left[\mathrm{CoF}_6\right]^{3-} & \text{Paramagnetic} & \mathrm{sp}^3 \mathrm{~d}^2 \end{array}\)
Only $\quad\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$ and $\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}$ are paramagnetic and $\mathrm{d}^2 \mathrm{sp}^3$ hybridisation of metal.

Asked in: JEE Main 2025 (07 Apr Shift 1)

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