Draw Lewis structures for pyrazine (C4H4N2) showing the two most common resonance forms. ?

Draw the Lewis structures with the formal charges minimized.

1 Answer

  • 1 month ago

    Pyrazine .... resonance structures

    Keep in mind that resonance structures are simply to get around the limitations of Lewis diagrams and by no means implies that there are actually alternating single and double bonds.

    All the bonds are identical in length and strength and that way be cause of delocalized pi-bonding.  That means that each element has a p-orbital perpendicular to the plane of the atoms, and that these p-orbitals overlap side-to-side.

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