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)`, the atomic dipoles and bond dipoles are in the opposite directions while in `NF_(3)` these are in the same direction
B. in `NH_(3)` and in `NF_(3)`, the atomic dipole and bond dipoles are in the same direction
C. in `NH_(3)`, the atomic dipoles and bond dipole are in the same direction whereass in `NF_(3)` these are in opposite direction
D. in `NH_(3)` as well as in `NF_(3)`, the atomic dipoles and bond dipoles are in opposite direction.

Answer

C

Explanation

is the correct answer.
For explanation, consult text part.