Which one of the following arrangements of molecules is correct on the basis of their dipole moments?

Q. Which one of the following arrangements of molecules is correct on the basis of their dipole moments?

1. BF3 > NF3 > NH3
2. NF3 > BF3 > NH3
3. NH3 > BF3 > NF3
4. NH3 > NF3 > BF3
5. NH3 = NF3 > BF3

Answer: NH3 > NF3 > BF3