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Does $\ce{O3}$ have polar or non-polar bonds? My teacher says that $\ce{O3}$ has non-polar bonds. But chem-libre texts and many other sources state that a non-polar bond has equal distribution of electrons, which doesn't seem to be the case in $\ce{O3}$. (Not asking whether the molecule $\ce{O3}$ is polar but rather if the bonds in $\ce{O3}$ are polar.)

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    $\begingroup$ Nonpolar bonds have insignificant partial charge on respective atoms. Ask yourself if it is the case of ozone $\endgroup$
    – Poutnik
    Commented Sep 5, 2021 at 17:08
  • $\begingroup$ @poutnik yes it does have the partial charge. Is the bond non polar? A bond is said to be polar when there is even distribution of electrons between atoms. But the distribution (from what I have seen in the electron density graphs that isn't the case.) $\endgroup$ Commented Sep 6, 2021 at 3:56
  • $\begingroup$ A bond is said to be non polar when there is (about) even distribution of (bond) electrons between atoms. When this distribution is shifted toward one of atoms, forming partial atom charges, such a bond is polar. $\endgroup$
    – Poutnik
    Commented Sep 6, 2021 at 5:14
  • $\begingroup$ To complement my old comment, electronegativity-wise non-polar bond can be polarized by already existing opposite charges on the bound atoms, as is in the ozone case. $\endgroup$
    – Poutnik
    Commented Oct 6, 2021 at 10:06

2 Answers 2

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You could say that the bonds are non-polar and the partial charge is due to the imbalance in non-bonding electrons. However, once there is a dipole due to those, you would induce a shift in the bonding electrons as well.

This view is mostly an artifact of a single electron wave function view. The reality is a bit more holistic with a wave function that describes multiple indistinguishable electrons, so the important thing is the actual dipole moment, not assigning “blame” for it.

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As we know resonance operates in Ozone molecule, so bond order between O-O bind is 1.5 As in the resonance hybrid, there is evrn distribution of electrons between O-O bonds, I think so that it is non-polar Resonance in ozone and formation of Resonance hybrid

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