Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The decreasing order of power of boron halides to act as lewis acids is.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
This order is observed due to relative tendency of the halogen atom to back donate its electrons to vacant p- orbital of boron atom. In 
, fluorine transfers two electrons to vacant 2p – orbital of boron forming 
bonds. This reduces the electron deficiency of boron The tendency to form back bonding decreases from 
to 
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