Which is the incorrect statement regarding resonance contributing structures?

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All atoms in a contributing structures must have complete valence shells

All contributing structures must have same arrangement of atoms

All contributing structures must have same number of valence electrons

Equivalent resonance structures have same potential energies

answer is A.

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Detailed Solution

There may be an atom with incomplete valence shell in one or more contributing structure, eg: C+H2−CH=C1H−O − CH3↔CH2=CH-C+HII−O−C H3↔CH2=CH−CHIII=O+−CH3Both I and II have a carbon atom with sextet of electronswhile III has all its atoms with complete valence shell.

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