Question
Which is more polar: $\mathrm{CO}_2$ or $\mathrm{N}_2 \mathrm{O}$? Give reason.

Answer

$\mathrm{N}_2 \mathrm{O}$ is more polar than $\mathrm{CO}_2$. This is because $\mathrm{CO}_2$​​​​​​​ is linear and symmetrical. Its net dipole moment is zero,

$\mathrm{N}_2 \mathrm{O}$ on the other hand, is linear but unsymmetrical. It is considered as a resonance hybrid of the following two structures.

It has a net dipole moment of 0.116D.

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