The electronegaivity difference between `N` and `F` is greater than that between ` N` and `H` yet the dipole moment of `NH_2` ( 1 .5 D) is larger than that of ` NF_3 ( 0. 2 D)`. This is because :

Options

A. In `NH_(3)` as well as in `NF_(3)` the atomic dipole and bond dipole are in the same direction
B. In `NH_(3)`the atomic dipole and bond dipole are in the same direction whereas in `NF_(3)` these are in opposite directions
C. In `NH_(3)` as well as `NF_(3)` the atomic dipole and bond dipole are in opposite directions
D. In `NH_(3)` the atomic dipole and bond dipole are in the opposite directions whereas in `NF_(3)` these are in the same direction

Answer

B