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Question

SiCl4 is hydrolised but CCl4 is not hydrolised because:
  1. Si has vacant d-orbitals and can accomodate lone pair of electrons from oxygen of water
  2. Si has large size and can increase its coordination number from four to five
  3. Si has relatively smaller size hence interaction with CO2 is spontaneous
  4. Si has oxidation of six while CO2 has oxidation of 2 for all

A
Si has relatively smaller size hence interaction with CO2 is spontaneous
B
Si has oxidation of six while CO2 has oxidation of 2 for all
C
Si has vacant d-orbitals and can accomodate lone pair of electrons from oxygen of water
D
Si has large size and can increase its coordination number from four to five
Solution
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SiCl4 is hydrolysed but CCl4 is not hydrolyzed because Si 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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