Identify a molecule having highest dipole moment from following.

Step-by-step solution

The dipole moment of a molecule depends on its geometry and the electronegativity difference between its constituent atoms. For H ₂ O , the oxygen atom is highly electronegative and possesses two lone pairs. The molecule has a bent structure, and the bond dipoles along with the lone pair dipoles reinforce each other, resulting in a high dipole moment of approximately 1.85 D . For NH ₃ , the nitrogen atom has one lone pair and the molecule is trigonal pyramidal. Its dipole moment is approximately 1.47 D . For CHCl ₃