Question

each of the following species except____, the electronic structure may be adequately described by 2 resonance formulas.
NO2
C6H6
SO2
O3
SO3 -2charge

Answer 1

To do this right you need to learn how to draw the Lewis electron dot structures for the substances listed. We can't draw them on these boards. I would go with SO3^-2 as the one without another resonance structure.

Answer 2

C6h6