Which out of NH3 and NF3 has a higher dipole moment and why?

Answer: NH₃ and NF₃ both have a geometry that is pyramidal in nature. For each molecule, N denotes an atom that has only one pair. On the other hand, F represents electronegative molecules. Hence, the H & N- F bond has higher polarity than bonds denoting N-H. It is estimated that the dipole of  NH₃ will be 1.46 D, while NF₃ will be measured as 0.24D at the same time. 

Thereby NF₃ will have a high dipole when compared to NH₃. Both bonds denote that N-H proceeds in the same direction, adding the number of lone pairs. On the other hand, bonds with the denotation of N-F move in the opposite direction, which cuts down the sole pair moment.