Neet Solved Paper 2013 Question 32

Question: Which one of the following molecules contain no $ \pi\text{ -} $ bond?

Options:

A) $ C{O_2} $

B) $ {H_2}O $

C) $ S{O_2} $

D) $ N{O_2} $

Show Answer

Answer:

Correct Answer: B

Solution:

  • All the molecules have O atom with lone pairs, but in $ {H_2}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.