Question

out of bf3 bcl3 ,BI3 and bbr3 which is more acidic and why in chemistry class 11 .​

Answer 1

Answer:

For BF3, boron has a 2p-orbital vacancy and each fluorine has unused 2p-orbitals completely filled. Fluorine passes two electrons to a 2p-orbital vacancy of boron, thereby forming a pπ−pπ bond (dative or back bonding) between the two. Thus BI3behaves as a Lewis acid which is strongest.

Hope this helps you.