Question

Dipole moment of ${NH}_3$ is ______ (more/less) than ${NF}_3$

Answer 1

NH3 has more dipole moment than $N{F}_3$.

In $N{H}_3$, N is more electronegative than H. So, N pulls the electrons from $H$ towards itself. So, the direction of the moment due to the $N-H$ bonds is in the same direction as that of the lone pair of electrons on Nitrogen.

Hence, the correct answer is more.