Octahedral molecule among the following is

$$\begin{gathered} S:1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^4 \\ \mathrm{Excited} \mathrm{state}: 1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^6 \left[3{\mathrm{s}}^{1}3{\mathrm{p}}^{3}3{\mathrm{d}}^2\right] \end{gathered}$$

Here one 3s, three 3p, and two 3d orbitals undergo hybridization forming the formation of six ${\mathrm{sp}}^3{\mathrm{d}}^2$ hybrid orbitals. 

Here hybridization is ${\mathrm{sp}}^3{\mathrm{d}}^2$.

The shape is octahedral.