QAIPMT-2006-Ch-2382: NEET 2006 Chemistry - Class 12 AIPMT-2006-Ch-2382 Solution: The electronegativity difference between N and F is greater…

The electronegativity difference between N and F is greater than that between N and H yet the dipole moment of $NH_3$ (1.5D) is larger than that of $NF_3$ (0.2 D). This is because in $NH_3$ the atomic dipole and bond dipole are in the opposite directions whereas in $NF_3$ these are in the same direction in $NH_3$ as well as in $NF_3$ the atomic dipole and bond dipole are in the same direction in $NH_3$ the atomic dipole and bond dipole are in the same direction whereas in $NF_3$ these are in opposite directions in $NH_3$ as well as in $NF_3$ the atomic dipole and bond dipole are in opposite directions.