Polarity in a molecule and hence the dipole moment depends primarily on electronegativity of the constituent atoms and shape of a molecule. Which of the following has the highest dipole moment?
(i) CO_{2}
(ii) HI
(iii) H_{2}O

(iv) SO_{2}

Answers (1)

The answer is the option (iii) H_{2}O

Explanation: H_{2}O has the highest dipole moment because it is highly electronegative and has two lone pair on it.

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