A) \[\text{C}{{\text{O}}_{\text{2}}}\]
B) \[{{\text{H}}_{\text{2}}}\text{O}\]
C) \[\text{S}{{\text{O}}_{\text{2}}}\]
D) \[\text{N}{{\text{O}}_{\text{2}}}\]
Correct Answer: B
Solution :
All the molecules have O atom with lone pairs, but in \[{{\text{H}}_{\text{2}}}\text{O}\] the H atom has no vacant orbital for \[\pi \] bonding. Thats why it does not have any \[\pi \] bond. In all other given molecules, the central atom because of the presence of vacant orbitals is capable to farm \[\pi \] bonds.
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