Chemistry - Complete Pblock- Question with Solution | TestHub

Due to back bonding from halogen to silicon electron density at silicon increase which strengthen the $\mathrm{Si}-\mathrm{Si}$ bond. This is absent in carbon halides. Due to absence of d-orbitals in carbon, carbon halides do not hydrolyse in water. ${\mathrm{PbF}}_4$ and ${\mathrm{SnF}}_4$ are ionic but other tetra halides are covalent. Due to inert pair effect, stability of tetrahalides decrease down the group while the stability of dihalides increase.