evaluate your friend says that nonpolar molecules cannot contain polar bonds. do you agree? support your answer.

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# Brief Explanations:
A nonpolar molecule can contain polar bonds. In a nonpolar molecule, the polar bonds may be symmetrically arranged. For example, in $CO_2$, the $C = O$ bonds are polar (because of the electronegativity difference between $C$ and $O$). But the molecule is linear, and the dipoles of the two $C = O$ bonds cancel each other out ($\vec{\mu}=0$). So the overall molecule is nonpolar despite having polar bonds.

# Answer:
No, I do not agree. A non - polar molecule can contain polar bonds. For example, $CO_2$ has polar $C = O$ bonds (due to electronegativity difference between $C$ ($2.5$) and $O$ ($3.5$)). But because of the linear geometry ($O = C=O$), the bond dipoles cancel each other ($\vec{\mu}=0$), making the $CO_2$ molecule non - polar.

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