Although F is more electronegative than H, the resultant dipole moment of `NH_(3)` is much more than that of `NF_(3)`. It can be explained as

Options

A. the lone pair of nitrogen opposes the dipole moment of `NF_(3)` while it is added to the dipole monet of `NH_(3)`
B. all the dipoles of `NF_(3)` are in same direction
C. all the dipoles of `NH_(3)` are in opposite direction
D. `NH_(3)` has a regular geometry while `NF_(3)` has irregular geometry which makes dipole moment of `NH_(3)` more than `NF_(3)`.

Answer

A

Explanation