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Q.

Which of the following statements is Incorrect ?

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a

SiCl4 hydrolyses in water but CCl4 do not hydrolyse in water

b

SiCl4 has more boiling point than CCl4

c

Si-Cl Bond in SiCl4 is stronger than C-Cl bond in CCl4 .

d

The C-Cl bond length is almost equal to the sum of covalent radii of carbon and chlorine atoms but Si -Cl bond length is shorter than the sum of covalent radii of silicon and chlorine atoms

answer is B.

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Detailed Solution

Due to more difference in electro negativities of Si and Cl , Cl the atoms acquire more
negative charge in SiCl4 than in CCl4 . So inter molecular repulsions arises which
decrease B.P in SiCl4 . Back bonding from ClSi . 

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