The power of halides of boron to act as Lewis acids decreases in the order:

Chemistry · JEE Main · NTA Exams — p-Block Elements

1. BF₃ > BCl₃ > BBr₃
2. BBr₃ > BCl₃ > BF₃
3. BCl₃ > BF₃ > BBr₃
4. BCl₃ > BBr₃ > BF₃

Answer

(B) BBr 3 > BCl 3 > BF 3

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