Chemistry, asked by polymersakthi, 11 months ago

BF3

is weaker lewis acid as compared to BCl3

Answers

Answered by ranjanalok961

3

In boron halides, there exists certain degree of pi bonding involving halogen lone pairs and empty 2p orbital of boron.This bonding is strongest in case of BF3 and when a boron halide accepts electrons from a donor molecule, this bonding is lost. Due to this, BF3 resists this change most strongly followed by other halide.

Due to this, BCl2 stronger Lewis acid than BF3

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