Question

Pick out the correct statement with respect to $\left[Mn\right(CN{)}_6{]}^{3-}$ :

• A. It is $ds{p}^2$ hybridised and square planar
• B. It is $s{p}^3{d}^2$ hybridised and octahedral
• C. It is $s{p}^3{d}^2$ hybridised and tetrahedral
• D. It is $d^{2}s{p}^3$ hybridised and octahedral

Answer 1

The correct option is D It is $d^{2}s{p}^3$ hybridised and octahedral

In the complex $\left[Mn\right(CN{)}_6{]}^{3-}$, the $M{n}^{3+}$ ion has $d^4$ outer electronic configuration.

It is an inner orbital complex. Inner d orbitals are used which results in $d^{2}s{p}^3$ hybridisation.

The molecular geometry is octahedral.

Hence the option D is correct.