Verified Solution • 2025–26 Session
moderate
QAIPMT-2006-Ch-2384: NEET 2006 Chemistry - Class 11 AIPMT-2006-Ch-2384 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 (1.5D) is larger than that of (0.2 D). This is because
Multiple Choice Options
- A in the atomic dipole and bond dipole are in the opposite directions whereas in these are in the same direction
- B in as well as in the atomic dipole and bond dipole are in the same direction
- C in the atomic dipole and bond dipole are in the same direction whereas in these are in opposite directions
- D in as well as in the atomic dipole and bond dipole are in opposite directions.
Step-by-Step Verified Solution
The dipole moment of NF 3 is 0.24 D and of NH 3 is 1.48 D. In NF 3 , the dipole moment vector are aligned in opposite direction to that of the dipole moment vector of lone pair on N�atom which partly cancel out. On the other hand, N�H bonds in NH 3 are in the same direction of dipole moment of the lone pair on N-atom which adds up the new resultant dipole moment.