Question

boron tribromide is a stronger acid than boron trifluoride why

Answer 1

Boron halides are acidic in nature due to the presence of only six electrons in the valence shell of boron. However, BBr3 is more acidic than BF3 because the extent of backbonding is the most in BF3, as a result of which electron deficiency on boron is the least in BF3.

Answer 2

Boron compounds are electron deficient because of vacant 2p orbital. ... Yes.BBr3 is a stronger lewis acid than BF3 the empty p orbital of boron in BF3 is partially filled up due to overlap of filled p orbital of the fluorine atoms.