# Aromaticity in cyclic ketones

I have read that, cycloprop-2-ene-1-one is aromatic and cyclopent-2,4-dien-1-one is antiaromatic. Basically this is visualized by visualizing the resonance structures of this.

Similarly if I apply this concept in para benzoquinone, I get that it is antiaromatic because of 4 conjugated $$\pi$$ electrons. But many sites on net say it is not aromatic. Where am I going wrong ?

• The concept is called resonance and the contributing structures are called resonance structures; they are not called resonating structures. Sep 11 at 8:14