Question

$NH _{3}$ and $NF _{3}$, both the molecules have pyramidal shape with a lone pair of electrons on nitrogen atom. Why does the dipole moment of $NH _{3}$ is greater than that of $NF _{3}$ ?

• A. Because $F$ is more electronegative than $N$-atom
• B. Because in $NF _{3}$ the orbital dipole is in the direction opposite to the resultant dipole moment of the three N-F bonds
• C. Because in $NH _{3}$ the orbital dipole is in the direction same to the resultant dipole moment of the three $N - H$ bonds
• D. All of the above

Answer 1

Answer: (D)

Correct answer is (d) All of the above