Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Arrange the following in the correct order of Lewis acidity: BF 3 , BC13, BBr3.
Text Solution
Verified by ExpertsThe correct answer is:
C
BF 3 <BCl3<BBr 3
In BF 3 , BCl 3 and BBr 3 each will shown 
back bonding as follows.
Extant of overlapping as the 2p - 2p > 2p - 3p > 2p - 4p difference between the size of p orbital increases the extent of overlapping decreases the availability of vacant orbital increases and the acidic character increases. Hence correct order of Lewis acidity represented by option (BF 3 < BC1 3 < BBr 3 ).
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