Question

Select the correct increasing order of $\pi$ bond formation tendency from the following :

• A. $Si-O>P-O>S-O>Cl-O$
• B. $Si-O<P-O<S-O<Cl-O$
• C. $Cl-O<Si-O<P-O<S-O$
• D. $Si-O<Cl-O<P-O<S-O$

Answer 1

The correct option is B $Si-O<P-O<S-O<Cl-O$

The correct increasing order of the pi bonding tendency is $Si-O<P-O<S-O<Cl-O$.

This is because, with decrease in the size from Si to Cl, the effectiveness of the sideways overlap increases.