• # question_answer 46)   Polarity in a molecule and hence the dipole momentdepends primarily on electronegativity of the constituentatoms and shape of molecule. Which of the following has the highest dipole moment?          (a) $C{{O}_{2}}$                             (b) $HI$                                             (c)${{H}_{2}}O$                                (d) $S{{O}_{2}}$

(c) Both ${{H}_{2}}O$ and $S{{O}_{2}}$ have same shape but the electro-negativity difference of O and H is more than S and O. Electro negativity of H, O and S are 2.1, 3.5 and 2.5 respectively.