Question

In the structure of $(S{b}_2{F}_{11}{)}^{-}$ the total number of hybrid orbitals present per Sb - atom are

Answer 1

Structure of $(S{b}_2{F}_{11}{)}^{-}$ is as follows

The hybridisation of each Sb atom is $s{p}^3{d}^2$.
Total 6 hybrid orbitals per Sb-atom.