Exams › JEE Advanced › Chemistry

Consider the following molecules: CO2, SO2, and H2O. Arrange them in ascending order of their dipole moments.

1. CO2 < SO2 < H2O
2. SO2 < CO2 < H2O
3. H2O < SO2 < CO2
4. H2O < CO2 < SO2

Correct answer: CO2 < SO2 < H2O

Solution

The arrangement of CO₂, SO₂, and H₂O in ascending order of their dipole moments is based on the molecular shapes and the electronegativity differences between the atoms in each molecule, with CO₂ being linear and nonpolar, SO₂ having a bent shape with a dipole moment, and H₂O having a significant dipole moment due to its bent shape and electronegativity difference.

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