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) CO2
(ii) HI
(iii) H2O
(iv) SO2
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) CO2
(ii) HI
(iii) H2O
(iv) SO2
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1 Answer
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This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Option (iii)
The dipole moment of the molecule depends on the difference in the electronegativity of the atoms present in the structure. The dipole moment of CO2 is 0, HI is 0.38, H2O is 1.84 and SO2 is 1.62.
As the oxygen atom is highly electronegative and hydrogen is least electronegative, the difference in electronegativity will be the highest for water molecules. Therefore, water molecules will have the highest dipole moment.
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