Chemistry - Coordination Chemistry Question with Solution | TestHub

In $[Mn(CO{)}_6][AlC{l}_4]$, the cation is $[Mn(CO{)}_6{]}^{+}$.

CO forms a coordinate bond by $\sigma$ donation and $d\to {\pi }^{\ast }$ back bonding with the metal.

Mn has 18 valence electrons in the complex, and $[AlC{l}_4{]}^{-}$ is a tetrahedral ion.

$[Na][V(CO{)}_6]$ contains $[V(CO{)}_6{]}^{-}$, where the metal has a different electron density, so C–O bond length will not be identical.

Answer: (D) Identical C–O bond length as in $Na[V(CO{)}_6]$