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 ?