Question

15) How many of the following molecules have sp hybridization on the central atom?

C₂Cl₂ CO₂ O₃ H₂O

A)0 B)1 C)2 D)3 E)4

Answer 1

(1) \(\mathrm{C}_{2} \mathrm{Cl}_{2}\) molecule having one triple bond between two carbon atoms.So the central carbon undergoes \(s p\) hybridization

\(C l C \equiv C C l\)

(2) In \(\mathrm{CO}_{2}\) molecule The central carbon forms double bonds with each oxygen atom.So it undergoes \(s p\) hybridization.

\(O=C=O\)

(3) In \(\mathrm{O}_{3}\) the central Oxygen forms one single bond with one oxygen \& a double bond with another oxygen. So it undergoes \(s p^{2}\) hybridization.

\(O-O=O\)

(4) In \(\mathrm{H}_{2} \mathrm{O}\) the central oxygen forms single bonds with two Hydrogen atoms separately. So it undergoes \(\mathrm{sp}^{3}\) hybridization.

\(H-O-H\)

\(\therefore\) The number of molecules having sp hybridized cetral atoms are 2

The option C is correct.