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.
