Question

Arrange the increasing order of acidity of bf3, bcl3, bbr3 with respect to nh3

Answer 1

Answer:

Boron atom in boron halides, ie BX3, has six electrons in the outermost orbit and thus it can accept a pair of electrons form a donor molecule like NH3 to complete its octet. Hence Acid character of boron trihalides is found to obey the order ; BI3>BBr3>BCl3>BF3.