Which of the following statements is correct for the complex…
Which of the following statements is correct for the complex $\mathrm{Ca}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{O}_{2}ight]$ having $\mathrm{t}_{2 \mathrm{~g}}^{6}, \mathrm{e}_{\mathrm{g}}^{0}$ electronic configuration?
$d^{2} s p^{3}$ hybridised and diamagnetic
$s p^{3} d^{2}$ hybridised and paramagnetic
$s p^{3} d^{2}$ hybridised and diamagnetic
$d^{2} s p^{3}$ hybridised and paramagnetic
Solution
Complex is dimagnetic due to presence of paired electron at $\mathrm{O}_{2}{ }^{-}$- i.e., superoxide acting as ligand.
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