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? (a) C02 (b) HI (c) H20 (d) S02

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(C) H2O is the correct answer. Because CO2 has bond dipole moments but in opposite direction so net dipole moment 'll be zero. SO2 and HI both have some dipole moment but less than H2O.
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H20,as others either they cancel or less
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