Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Solution:

A. N(SiH₃)₃ is a weaker Lewis base than N(CH₃)₃ due to the involvement of the lone pair on nitrogen in pπ-dπ backbonding with the vacant d-orbitals of silicon. This delocalization reduces the availability of the lone pair for donation.

B. ICl₃ exists as a planar dimer, I₂Cl₆. In this dimer, iodine atoms are sp³d hybridized, not sp³d.

C. CCl₄ reacts with superheated steam to phosgene (COCl₂).

D. ClO₂ is a free radical. It does not dimerize to Cl₂O₄

The final answer is $\boxed{D}$