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Standard XII

Chemistry

Reactivity Towards Halogens

SiCl4 is hydr...

Question

$S i C l_{4}$ is hydrolised but $C C l_{4}$ is not hydrolised because:

S i

has vacant d-orbitals and can accomodate lone pair of electrons from oxygen of water

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S i

has large size and can increase its coordination number from four to five

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S i

has relatively smaller size hence interaction with

C O_{2}

is spontaneous

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S i

has oxidation of six while

C O_{2}

has oxidation of 2 for all

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Solution

The correct option is A $S i$ has vacant d-orbitals and can accomodate lone pair of electrons from oxygen of water
$S i C l_{4}$ is hydrolysed but $C C l_{4}$ is not hydrolyzed because $S i$ has vacant d-orbitals and can accommodate a lone pair of electrons from the oxygen of water whereas $C$ does not have vacant d-orbitals to accommodate a lone pair of electrons.

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Similar questions

Q. Assertion :

{[S i F_{6}]}^{2 -}

is known but

{[S i {C l}_{6}]}^{2 -}

not Reason: Size of flourine is small and its lone pair of electrons interact with

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Q. Assertion :

S i C l_{4}

is easily hydrolised as compared to

C C l_{4}

. Reason: Silicon can extend its coordination number beyond four.

Q. Assertion:

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is known but

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Reason: Size of fluorine is small and its lone pair of electrons interacts with d-orbitals of Si strongly.

Q. Assertion :

S i F_{6}^{2 -}

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S i C l_{6}^{2 -}

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Q. Sulphur and the rest of the elements of group 16 are less electronegative than oxygen. Therefore, their atoms cannot accept electrons easily. They can acquire the

n s^{2} n p^{6}

configuration by sharing two electrons with the atoms of the other elements and thus, exhibit a

+ 2

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and

+ 6

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SiCl4 is hydrolised but CCl4 is not hydrolised because:

$S i C l_{4}$ is hydrolised but $C C l_{4}$ is not hydrolised because: