The incorrect statement regarding  $O{\left(Si{H}_3\right)}_{2}andOC{l}_2$  molecule is/are:

The nature of back bond in both molecules is  $(2p_{\pi }-3d_{\pi })$

Hybridisation of central O-atom in both molecules is same.

The strength of back bonding is more in $O{\left(Si{H}_3\right)}_2$  molecule than $OC{l}_2$  molecule

 $\text{Si-}\widehat{O}\text{-Si}$   bond angle in $O{\left(Si{H}_3\right)}_2$   is greater than  $Cl-\widehat{O}-Cl$  bond angle in  $OC{l}_2$.