Pyridine with pyrazine has structures similar to benzene. Explain both compounds have structures with six atoms in a ring. Depict Lewis structures for pyridine and pyrazine showing all resonance forms. Define the N atoms in the pyridine are opposite each other in the ring with 2 carbons between them in either direction. Indicate resonance with a double headed arrow between the structures. Depict the Lewis structures with the formal charges minimized