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SO3 is a non polar molecule. Although the bonds between the S and O atoms are polar because S is more electronegative than O hence creating an electronegativity difference, the molecule is non polar. This is because the negative and positive centres are both loacted in the same place (at the S molecule) as they are all on the same plane and therefore there is no permanant dipole as the dipoles in the bond cancel each other out, therefore the molecule is non polar.

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16y ago

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