Question

Draw the Lewis structures for pyrazine (C₄H₄N₂) showing the two most common resonance forms. Draw the Lewis structures with the formal charges minimized.

Answer 1

The Lewis structures for pyrazine (C₄H₄N₂) include two most common resonance forms that contribute to its stability.

Step-by-step explanation:

Resonance Forms of Pyrazine (C₄H₄N₂)

Pyrazine (C₄H₄N₂) has two most common resonance forms. In the first resonance form, one nitrogen atom donates a lone pair of electrons to form a double bond with carbon, while the other nitrogen atom forms a double bond with another carbon atom. In the second resonance form, the double bonds are switched between the carbon atoms, resulting in a different arrangement of double bonds. Both resonance forms involve delocalization of electrons and contribute to the overall stability of pyrazine.