Question

NH3 and BF3 form an adduct readily because they form
A. a coordinate bond
B. a covalent bond
C. a ionic bond
D. a hydrogen bond

Answer 1

The correct answer is option (a).

Answer 2

Answer:

NH₃ and BF₃ form an adduct readily because they form a coordinate bond.

Explanation:

The correct answer is option a) a coordinate bond 

• BF₃ is a lewis acid capable of accepting electron pairs whereas NH₃ is a lewis acid donating electron pair.
• NH₃ binds with BF₃ by donating a pair of electrons and thus forming a co-ordinate bond.
• Therefore, NH₃ and BF₃ form an adduct readily because they form a coordinate bond.