Chemical Bonding And Molecular Structure

Dipole moment of ammonia is due to orbital dipole and resultant diapole in same direction.

\(\mathrm{O}_2, \mathrm{H}_2\) shown bond diapole due to polarisation.

Dipole moment is scalar quantity.

In \(\mathrm{BF}_3\) bond dicopoles are zero but dipole moment is higher.