Ncert Exercises & Solutions

The molecule among the following having the highest dipole moment is:
1. CO₂
2. HI
3. H₂O
4. SO₂

HINT: If the molecule is symmetrical then its dipole moment is zero.

Explanation:

CO₂ being symmetrical has zero dipole moment.

Among HI, SO_2, and H₂O dipole moment is highest for H₂O as in it the central atom contain 2 lone pairs. Also the polarity difference between H and O is more as compared to H and S.

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