Chemistry, asked by ankityadav2817p576qz, 1 year ago

BF3 is a weaker Lewis acid than BCL3

ankityadav2817p576qz: Explain why it is so

Answers

Answered by Akshay0605

yes you are right it is weaker

ankityadav2817p576qz: Explain why

ankityadav2817p576qz: Tell friends

Akshay0605: 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 halides and thus the acceptor strength increases in the order BF3 < BCl3 < BBr3 < BI3

Akshay0605: Hope you understand noe

Answered by rehan778866khap56hzs

yes BF3 is weaker Lewis acid than BCl3 because of the presence of.fluirine in BF3... here Fluirine is most electro negative element and lewis acids are electron accepting compounds so when an electro negative element come in Vicinity of BF3 to donate its electron ,it is difficult because of repulsion by most electro negative element Fluirine. ..
thats why BF3 is.weaker lewis.acid than BCl3 comaritively....

HOPE U UNDERSTOOD... :-)

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