The trihalide of nitrogen with highest dipole moment is

Options

A. `NF_(3)`
B. `NCl_(3)`
C. `NBr_(3)`
D. `NI_(3)`

Answer

D

Explanation

Trihalides of nitrogen has a pyramidal structure with a lone pair on nitrogen

Due to the presence of lone pair on N, this end has a `delta`-charge. More the `delta`+ charge (or lesser in `delta`-charge) on the other end, more is the dipole moment. thus `PI_(3)` (with least electronegativity I) has the highest dipole moment.