The main factor responsible for weak acidic nature of B-F bonds in BF 3 is - Options: A . &nbsp Large electronegativity of F B . &nbsp Three centred two electron bonds in BF 3 C . &nbsp p p - d p back bonding D . &nbsp p p - p p back bonding

The main factor responsible for weak acidic nature of B-F bonds in BF3 is

Discussion Forum : P Block Elements

Question -

The main factor responsible for weak acidic nature of B-F bonds in BF3 is -

Options:

A . Large electronegativity of F

B . Three centred two electron bonds in BF3

C . pp- dp back bonding

D . pp- pp back bonding

Answer: Option D
:
D

It is pp- pp bonding involving B and F atom responsible for the acidic nature of boron halides as BF3<BCl3<BBr3< BI3 smaller atom shows more back bonding

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