P Block Elements Question 437

Question: The factor responsible for weak acidic nature of B-F bonds in $ BF_3 $ is

Options:

A) high electronegativity of fluorine

B) three-centred two electron bonds in $ BF_3 $

C) $ p\pi -d\pi $ back bonding

D) $ p\pi -p\pi $ back bonding

Show Answer

Answer:

Correct Answer: D

Solution:

It is $ p\pi -p\pi $ back bonding involving B and F. The smaller atoms show more back bonding.



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