3. Determine if an ion is aromatic The first two submissions are already open. The third can be opened by submitting a Growth Token. Question 1 What is the main difference between an aromatic and antiaromatic compound? O Aromatic compounds must be cyclic and planar, but not antiaromatic compounds O Aromatic compounds must be monocyclic. O Antiaromatic compounds must have a conjugated system with p orbital at every vertex O Aromatic compounds must satisfy Hckel's rule. none of these