Question

what is the boiling point order among BF3, BCl3, BBr3

Answer 1

Answer:

BF3 > BCl3 > BBr3

Explanation:

since fluorine is the smallest in the group the distance between boron and fluorine in the compound is less hence making it difficult to break the bonds.

size increases in order:

F < Cl < Br

distance between boron and the atom increases in order:

B-F < B-Cl < B-Br

∴ boiling point decreases in order:

BF3 > BCl3 > BBr3