$S i C l_{4}$ is easily hydrolysed but $C C l_{4}$ is not. This is because

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silicon can form hydrogen bonds but carbon cannot.

silicon can extend its coordination number beyond four but carbon cannot

bonding in $S i C l_{4}$ is ionic

silicon is non-metallic

answer is C.

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Detailed Solution

Silicon is the second member of group-14 and has vacant 3d orbitals. Therefore, silicon can extend its valency beyond four. Carbon is the first member of group-14 and is tetravalent, which means that it can form only four bonds. It cannot extend its valency because it has no vacant d orbitals. This is the reason that SiCl₄ can undergo hydrolysis but CCl₄ cannot undergo hydrolysis.

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