Question

Boron tribromide us a stronger Acid than Boron trifluoride Assign reason.

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.