Even if fluorine is more electronegative than hydrogen, resultant dipole of NH3 is greater than that of NF3. This is due to ___________.
1
Presence of extra lone pair in NF3
2
Repulsion and steric hindrance between N and F in NF3
3
The orbital dipole in NF3 is opposite in direction to the resultant dipole moment of N-F bonds
4
Total charge on NH3 is positive